UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2007

OR

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission file number 1-13883

CALIFORNIA WATER SERVICE GROUP

(Exact name of registrant as specified in its charter)

Delaware	77-0448994
(State or other jurisdiction	(I.R.S. Employer identification No.)
of incorporation or organization)
1720 North First Street, San Jose, CA.	95112
(Address of principal executive offices)	(Zip Code)

408-367-8200
(Registrant’s telephone number, including area code)

Not Applicable
(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes þ No o

Indicate by checkmark whether the Registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 or the Exchange Act. (Check one):

Large accelerated filer o       Accelerated filer þ       Non-accelerated filer o

Indicate by check mark whether the registrant is a shell company (as defined in rule 12b-2 of the Exchange Act) Yes o No þ

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date. Common shares outstanding as of August 1, 2007 – 20,666,469.

TABLE OF CONTENTS

		Page
PART I	Financial Information
Item 1	Financial Statements		3
	Condensed Consolidated Balance Sheets (unaudited) June 30, 2007 and December 31, 2006		3
	Condensed Consolidated Statements of Income (unaudited) For the Three Months Ended June 30, 2007 and 2006		4
	Condensed Consolidated Statements of Income (unaudited) For the Six Months Ended June 30, 2007 and 2006		5
	Condensed Consolidated Statements of Cash Flows (unaudited) For the Six Months Ended June 30, 2007 and 2006		6
	Notes to Unaudited Condensed Consolidated Financial Statements		7
Item 2	Management’s Discussion and Analysis of Financial Condition and Results of Operations		14
Item 3	Quantitative and Qualitative Disclosure about Market Risk		29
Item 4	Controls and Procedures		29
PART II	Other Information
Item 1	Legal Proceedings		30
Item 6	Exhibits		32
	Signatures		33
	Index to Exhibits		34
EXHIBIT 10.16
EXHIBIT 10.17
EXHIBIT 31.1
EXHIBIT 31.2
EXHIBIT 32

2

PART I FINANCIAL INFORMATION

Item 1.

FINANCIAL STATEMENTS

The condensed consolidated financial statements presented in this filing on Form 10-Q have been prepared by management and are unaudited.

CALIFORNIA WATER SERVICE GROUP

CONDENSED CONSOLIDATED BALANCE SHEETS

Unaudited

(In thousands, except per share data)

	June 30,			December 31,
	2007			2006
ASSETS
Utility plant:
Utility plant	$	1,394,883		$	1,344,415
Less accumulated depreciation and amortization		(420,321	)		(402,940	)
Net utility plant		974,562			941,475
Current assets:
Cash and cash equivalents		29,842			60,312
Receivables:
Customers		23,050			19,526
Other		6,134			6,700
Unbilled revenue		14,698			11,341
Materials and supplies at average cost		4,742			4,515
Prepaid pension expense		—			1,696
Taxes and other prepaid expenses		5,587			5,534
Total current assets		84,053			109,624
Other assets
Regulatory assets		93,861			93,785
Other assets		22,008			20,135
Total other assets		115,869			113,920
	$	1,174,484		$	1,165,019
CAPITALIZATION AND LIABILITIES
Capitalization:
Common stock, $.01 par value	$	207		$	207
Additional paid-in capital		211,681			211,513
Retained earnings		163,830			166,582
Total common stockholders’ equity		375,718			378,302
Preferred stock		3,475			3,475
Long-term debt, less current maturities		291,299			291,814
Total capitalization		670,492			673,591
Current liabilities:
Current maturities of long-term debt		1,778			1,778
Accounts payable		37,988			33,130
Accrued expenses and other liabilities		32,503			35,317
Total current liabilities		72,269			70,225
Unamortized investment tax credits		2,541			2,541
Deferred income taxes, net		69,472			69,503
Pension and postretirement benefits other than pensions		48,584			48,584
Regulatory and other liabilities		33,629			33,411
Advances for construction		165,819			157,660
Contributions in aid of construction		111,678			109,504
Commitments and contingencies		—			—
	$	1,174,484		$	1,165,019

See Accompanying Notes to Unaudited Condensed Consolidated Financial Statements

3

CALIFORNIA WATER SERVICE GROUP

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

Unaudited

(In thousands, except per share data)

For the three months ended:	June 30,			June 30,
	2007			2006
Operating revenue	$	95,782		$	81,102
Operating expenses:
Water production costs		37,271			30,210
Other operations		25,274			23,399
Maintenance		5,241			3,432
Depreciation and amortization		8,380			7,640
Income taxes		4,792			3,753
Property and other taxes		3,435			3,045
Total operating expenses		84,393			71,479
Net operating income		11,389			9,623
Other income and expenses:
Non-regulated revenue		3,423			2,206
Non-regulated expense		(1,966	)		(1,800	)
Gain (loss) on sale of non-utility property		(83	)		323
Less: income taxes on other income and expenses		(560	)		(297	)
Total other income and expenses		814			432
Interest expense:
Interest expense		4,926			4,970
Less: capitalized interest		(450	)		(625	)
Net interest expense		4,476			4,345
Net income	$	7,727		$	5,710
Earnings per share
Basic	$	0.37		$	0.31
Diluted	$	0.37		$	0.31
Weighted average shares outstanding
Basic		20,666			18,407
Diluted		20,690			18,427
Dividends per share of common stock	$	0.2900		$	0.2875

See Accompanying Notes to Unaudited Condensed Consolidated Financial Statements

4

CALIFORNIA WATER SERVICE GROUP

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

Unaudited

(In thousands, except per share data)

For the six months ended:	June 30,			June 30,
	2007			2006
Operating revenue	$	167,352		$	146,318
Operating expenses:
Water production costs		63,084			51,639
Other operations		48,930			47,187
Maintenance		9,750			7,330
Depreciation and amortization		16,781			15,349
Income taxes		5,336			4,041
Property and other taxes		6,840			6,221
Total operating expenses		150,721			131,767
Net operating income		16,631			14,551
Other income and expenses:
Non-regulated revenue		6,465			4,355
Non-regulated expenses		(3,717	)		(3,339	)
Gain (loss) on sale of non-utility property		(83	)		348
Less: income taxes on other income and expenses		(1,086	)		(556	)
Total other income and expenses		1,579			808
Interest expense:
Interest expense		9,852			9,667
Less: capitalized interest		(950	)		(850	)
Total interest expense		8,902			8,817
Net income	$	9,308		$	6,542
Earnings per share
Basic	$	0.45		$	0.35
Diluted	$	0.45		$	0.35
Weighted average shares outstanding
Basic		20,663			18,404
Diluted		20,687			18,427
Dividends per share of common stock	$	0.5800		$	0.5750

See Accompanying Notes to Unaudited Condensed Consolidated Financial Statements

5

CALIFORNIA WATER SERVICE GROUP

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

Unaudited

(In thousands)

For the six months ended:	June 30,			June 30,
	2007			2006
Operating activities
Net income	$	9,308		$	6,542
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		16,781			15,349
Amortization of debt		337			330
Deferred income taxes, investment tax credits, regulatory assets and liabilities, net		57			1,290
(Gain) loss on sale of non-utility property		83			(348	)
Changes in operating assets and liabilities:
Receivables		(2,937	)		(4,069	)
Unbilled revenue		(3,358	)		(2,576	)
Taxes and other prepaid expenses		(689	)		1,210
Accounts payable		6,535			3,097
Other current assets		(227	)		(730	)
Other current liabilities		(2,814	)		3,915
Other changes, net		(1,840	)		(952	)
Net adjustments		11,928			16,516
Net cash provided by operating activities		21,236			23,058
Investing activities:
Utility plant expenditures:
Company funded		(39,368	)		(46,617	)
Developer funded		(11,903	)		(13,814	)
Acquisition		(30	)		(13	)
Proceeds from sale of non-utility property		—			353
Net cash used in investing activities		(51,301	)		(60,091	)
Financing activities:
Net short-term borrowings		—			26,000
Net repayment of long-term debt		(514	)		(444	)
Advances for construction		11,362			11,480
Refunds of advances for construction		(3,203	)		(2,520	)
Contributions in aid of construction		3,842			5,452
Issuance of common stock		168			392
Dividends paid		(12,060	)		(10,658	)
Net cash (used in) provided by financing activities		(405	)		29,702
Change in cash and cash equivalents		(30,470	)		(7,331	)
Cash and cash equivalents at beginning of period		60,312			9,533
Cash and cash equivalents at end of period	$	29,842		$	2,202
Supplemental disclosure of non-cash activities:
Accrued payables for investments in utility plant	$	8,801		$	7,572

See Accompanying Notes to Unaudited Condensed Consolidated Financial Statements

6

CALIFORNIA WATER SERVICE GROUP

Notes to Unaudited Condensed Consolidated Financial Statements

June 30, 2007

(Amounts in thousands, except share and per share amounts)

Note 1. Organization and Operations

California Water Service Group (the Company) is a holding company with five wholly owned subsidiaries that provide water utility and other related services in California, Washington, New Mexico and Hawaii. California Water Service Company (Cal Water), Washington Water Service Company (Washington Water), New Mexico Water Service Company (New Mexico Water), and Hawaii Water Service Company, Inc. (Hawaii Water) provide regulated utility services under the rules and regulations of their respective state’s regulatory commissions (Commissions). In addition, these entities and CWS Utility Services provide non-regulated water utility and utility-related services.

The Company operates primarily in one business segment providing water utility services.

Note 2. Summary of Significant Accounting Policies

Basis of Presentation

The interim financial information is unaudited. The condensed consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements for the year ended December 31, 2006, included in its Form 10-K as filed with the Securities and Exchange Commission (SEC) on March 14, 2007.

In the opinion of management, the accompanying condensed consolidated financial statements reflect all adjustments that are necessary to provide a fair presentation of the results for the periods covered. The adjustments consist only of normal recurring adjustments. The results for interim periods are not necessarily indicative of the results for any future period.

The preparation of the Company’s condensed consolidated financial statements necessarily requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the condensed consolidated balance sheet dates, and the reported amounts of revenues and expenses for the periods presented.

Certain prior year’s amounts have been reclassified, where necessary, to conform to the current presentation as follows: on the income statement, non-regulated income and non-regulated expenses which were previously netted in the income statement have been presented separately: also, prior year amounts for income taxes associated with other income and expenses were reclassified from income taxes included in operating expenses to income taxes on other income and expenses. On the statements of cash flows, prior year amounts for company-funded utility plant expenditures and accounts payable have been reduced for non-cash activities.

7

Revenue

Revenue consists of monthly cycle billings for regulated water and wastewater services at rates authorized by the Commissions and billings to certain non-regulated customers. Billings include a fee that is paid to the Commissions. This amount is recorded in revenue and other operations expense. Fees paid to the Commissions for the six months ending June 30, 2007, and June 30, 2006, were $2,178 and $1,864, respectively.

Other Recent Accounting Pronouncements

In September 2006, the FASB issued SFAS No. 157 “Fair Value Measurements.” The statement defines fair value, establishes a framework for measuring fair values in generally accepted accounting principles, and expands disclosures about fair value measurements. The statement is effective for years beginning after November 15, 2007. The adoption of this statement is not expected to have a material impact on the Company’s financial position, results of operations or cash flows.

In February 2007, the FASB issued SFAS No. 159, “The Fair Value Option for Financial Assets and Financial Liabilities – Including an amendment of FASB Statement No. 115.” The statement permits entities to choose to measure many financial instruments and certain other items at fair value. The statement is effective for years beginning after November 15, 2007. The adoption of this statement is not expected to have a material impact on the Company’s financial position, results of operations, or cash flows.

Note 3. Seasonal Business

Due to the seasonal nature of the water business, the results for interim periods are not indicative of the results for a twelve-month period. Revenue and income are generally higher in the warm, dry summer months when water usage and sales are greater. Revenue and income are lower in the winter months when cooler temperatures and rainfall curtail water usage and sales.

Note 4. Stock-based Compensation

Long-Term Incentive Plan

The Company had a stockholder-approved Long-Term Incentive Plan (which was replaced on April 27, 2005, by a stockholder-approved Equity Incentive Plan) that allowed granting of non-qualified stock options. The Company accounted for options issued under the Long-Term Incentive Plan using the intrinsic value method under Accounting Principles Board Opinion No. 25, “Accounting for Stock Issued to Employees.” All outstanding options have an exercise price equal to the market price on the date they were granted. All options granted under the Long-Term Incentive Plan are fully vested. No compensation expense was recorded for the six-month periods ended June 30, 2007 and 2006 related to stock options issued under the Long-Term Incentive Plan.

8

The table below reflects the stock options granted under the Long-Term Incentive Plan.

			Weighted Average
	Shares		Exercise Price
Stock Options:
Outstanding at December 31, 2006		90,500	$	24.94
Exercised		- 0 -		- 0 -
Forfeited		- 0 -		- 0 -
Outstanding at June 30, 2007		90,500	$	24.94
Exercisable at June 30, 2007		90,500	$	24.94

Equity Incentive Plan

The Equity Incentive Plan, which was approved by shareholders in April 2005, is authorized to issue up to 1,000,000 shares of common stock. In the first quarter of 2007 and 2006, the Company granted Restricted Stock Awards (RSAs) of 9,770 and 9,142 shares, respectively, of common stock to employees and directors of the Company. Employee awards vest ratably over 48 months, while director awards generally vest at the end of 12 months. The shares were valued at $38.11 and $38.51 per share, respectively, based upon the fair market value of the Company’s common stock on the date of grant. In the first six months of 2007 and 2006, the Company granted Stock Appreciation Rights (SARs) equivalent to 22,140 and 40,000 shares, respectively, to employees, which vest ratably over 48 months and expire at the end of 10 years. The grant-date fair value for SARs was determined using the Black Scholes model, which arrived at a fair value of $10.36 and $7.73 per share, respectively. Upon exercise of a SAR, the appreciation is payable in common shares of the Company.

The assumptions utilized in calculation of the SAR fair value were:

	2007			2006
Expected dividend yield		2.99	%		2.99	%
Expected volatility		32.79	%		21.90	%
Risk-free interest rate		4.48	%		4.19	%
Expected holding period in years		5.2			6.0

The Company did not apply a forfeiture rate in the expense computation relating to RSAs and SARs issued to employees as they vest monthly and, as a result, the expense is recorded for actual vesting during the period. For outside directors the Company did not apply a forfeiture rate in the expense computation relating to RSAs, as the Company expects 100% to vest at the end of twelve months.

9

The table below reflects SARs granted under the Equity Incentive Plan.

				Weighted Average
	Shares			Exercise Price
Stock Appreciation Rights
Outstanding at December 31, 2006		37,969		$	38.77
Granted		22,140			38.11
Exercised		- 0 -			—
Forfeited		(469	)		38.51
Outstanding at June 30, 2007		59,640		$	38.53
Exercisable at June 30, 2007		14,453		$	38.66

The Company has recorded compensation costs for the RSAs and SARs in Operating Expense, net of related tax effects, in the amount of $56 and $52 for the quarter ending June 30, 2007, and June 30, 2006, respectively, and $101 and $86 for the six months ending June 30, 2007 and 2006, respectively.

Note 5. Earnings Per Share Calculations

The computations of basic and diluted earnings per share are noted below. RSAs are included in the weighted stock outstanding used to calculate basic earnings per share as the shares have all voting and dividend rights as issued and unrestricted common stock. Diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock. RSAs are included in the weighted stock outstanding used to calculate dilutive earnings per share as the shares have all voting and dividend rights as issued and unrestricted common stock.

10

All options are dilutive and for 2007 all SARs are antidilutive. The dilutive effect is shown in the table below.

(In thousands, except per share data)

	Three Months Ended June 30,
	2007		2006
Net income	$	7,727	$	5,710
Less preferred dividends		38		38
Net income available to common stockholders	$	7,689	$	5,672
Weighted average common shares, basic		20,666		18,407
Dilutive common stock options and SARs (treasury method)		24		20
Shares used for dilutive computation		20,690		18,427
Net income per share — basic	$	0.37	$	0.31
Net income per share — diluted	$	0.37	$	0.31

	Six Months Ended June 30,
	2007		2006
Net income	$	9,308	$	6,542
Less preferred dividends		76		76
Net income available to common stockholders	$	9,232	$	6,466
Weighted average common shares, basic		20,663		18,404
Dilutive common stock options and SARs (treasury method)		24		23
Shares used for dilutive computation		20,687		18,427
Net income per share — basic	$	0.45	$	0.35
Net income per share — diluted	$	0.45	$	0.35

Note 6. Pension Plan and Other Postretirement Benefits

The Company provides a qualified, defined-benefit, non-contributory pension plan for substantially all employees. The Company makes annual contributions to fund the amounts accrued for the qualified pension plan. The Company also maintains an unfunded, non-qualified, supplemental executive retirement plan. The costs of the plans are charged to expense and utility plant as appropriate.

11

The Company offers medical, dental, vision, and life insurance benefits for retirees and their spouses and dependents. Participants are required to pay a premium, which offsets a portion of the cost.

Cash payments by the Company related to pension plans and other postretirement benefits were $1,243 for the six months ended June 30, 2007. The estimated cash contribution to the pension plans for 2007 is $7,913. The estimated contribution to the other benefits plan for 2007 is $2,400.

The following table lists components of the pension plans and other postretirement benefits. The data listed under “pension plan” includes the qualified pension plan and the non-qualified executive supplemental retirement plan. The data listed under “other benefits” is for all other postretirement benefits.

(In thousands)	Three Months Ended June 30,												Six Months Ended June 30,
	Pension Benefit						Other Benefits						Pension Benefit						Other Benefits
	2007			2006			2007			2006			2007			2006			2007			2006
Service cost	$	1,247		$	1,337		$	270		$	273		$	2,646		$	2,674		$	577		$	576
Interest cost		1,683			1,523			355			258			3,261			3,027			659			572
Expected return on plan assets		(1,431	)		(1,301	)		(117	)		(16	)		(2,852	)		(2,872	)		(235	)		(121	)
Recognized net initial APBO(1)		N/A			N/A			69			69			N/A			N/A			138			138
Amortization of prior service cost		468			477			18			18			936			953			37			37
Recognized net actuarial loss		310			179			39			32			505			384			84			65
Net periodic benefit cost	$	2,277		$	2,215		$	634		$	634		$	4,496		$	4,166		$	1,260		$	1,267

(1) APBO – Accumulated postretirement benefit obligation

Note 7. Income Taxes

The Company adopted the provisions of Financial Accounting Standards Board (FASB) Interpretation No. 48, “Accounting for Uncertainty in Income Taxes, an interpretation of FASB Statement No. 109” (FIN 48), on January 1, 2007. This interpretation prescribes a recognition threshold and measurement attributes for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. FIN 48 also provides guidance on derecognition of tax benefits, classification on the balance sheet, interest and penalties, accounting in interim periods and disclosure and transition. At the adoption date and as of June 30, 2007, we had no material unrecognized tax benefits and no adjustments to liabilities or operations were required.

In connection with the adoption of FIN 48, the Company will include interest and penalties related to uncertain tax positions as a component of income taxes, which were zero for the six months ended June 30, 2007.

Tax years 2003 through 2006 and 2002 through 2006 are subject to examination by the federal and state taxing authorities, respectively. There are no income tax examinations currently in progress.

12

Note 8. Short-term Borrowings

During the second quarter, the Company and Cal Water signed bank lines of credit of $20 million and $55 million, respectively. The lines of credit agreements expire on April 30, 2012. The agreement with the Company requires a debt to capitalization ratio less than 0.667:1.0 and an interest coverage ratio of at least 2.5:1.0. As of June 30, 2007, the Company and Cal Water were in compliance with the bank covenants contained in the loan agreements. As of June 30, 2007, there were no borrowings outstanding.

13

Item 2

MANAGEMENT’S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

FORWARD LOOKING STATEMENTS

This quarterly report, including all documents incorporated by reference, contains forward-looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 (Act). Forward-looking statements in this quarterly report are based on currently available information, expectations, estimates, assumptions and projections, and our management’s beliefs, assumptions, judgments and expectations about us, the water utility industry and general economic conditions. These statements are not statements of historical fact. When used in our documents, statements that are not historical in nature, including words like “expects,” “intends,” “plans,” “believes,” “may,” “estimates,” “assumes,” “anticipates,” “projects,” “predicts,” “forecasts,” “should,” “seeks,” or variations of these words or similar expressions are intended to identify forward-looking statements. The forward-looking statements are not guarantees of future performance. They are based on numerous assumptions that we believe are reasonable, but they are open to a wide range of uncertainties and business risks. Consequently, actual results may vary materially from what is contained in a forward-looking statement.

Factors which may cause actual results to be different than those expected or anticipated include, but are not limited to:

• governmental and regulatory commissions’ decisions, including decisions on proper disposition of property;

• changes in regulatory commissions’ policies and procedures;

• the timeliness of regulatory commissions’ actions concerning rate relief;

• new legislation;

• changes in accounting valuations and estimates;

• the ability to satisfy requirements related to the Sarbanes-Oxley Act and other regulations on internal controls;

• electric power interruptions;

• increases in suppliers’ prices and the availability of supplies including water and power;

• fluctuations in interest rates;

• changes in environmental compliance and water quality requirements;

• acquisitions and the ability to successfully integrate acquired companies;

• the ability to successfully implement business plans;

• changes in customer water use patterns;

• the impact of weather on water sales and operating results;

• changes in the capital markets and access to sufficient capital on satisfactory terms;

• civil disturbances or terrorist threats or acts, or apprehension about the possible future occurrences of acts of this type;

• the involvement of the United States in war or other hostilities;

• our ability to attract and retain qualified employees;

• labor relations matters as we negotiate with the unions;

14

• restrictive covenants in or changes to the credit ratings on current or future debt that could increase financing costs or affect the ability to borrow, make payments on debt, or pay dividends; and

• the risks set forth in “Risk Factors” included elsewhere in this quarterly report.

In light of these risks, uncertainties and assumptions, investors are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date of this quarterly report or as of the date of any document incorporated by reference in this report, as applicable. When considering forward-looking statements, investors should keep in mind the cautionary statements in this quarterly report and the documents incorporated by reference. We are not under any obligation, and we expressly disclaim any obligation, to update or alter any forward-looking statements, whether as a result of new information, future events or otherwise.

CRITICAL ACCOUNTING POLICIES

We maintain our accounting records in accordance with accounting principles generally accepted in the United States and as directed by the regulatory commissions to which we are subject. The process of preparing financial statements requires the use of estimates on the part of management. The estimates used by management are based on historical experience and an understanding of current facts and circumstances. Management believes that the following accounting policies are critical because they involve a higher degree of complexity and judgment, and can have a material impact on our results of operations and financial condition.

Revenue Recognition

Our revenue consists of monthly cycle customer billings for regulated water and wastewater services at rates authorized by the governmental and regulatory commissions and billings to certain non-regulated customers.

Revenue from metered customers includes billings to customers based on monthly meter readings plus an estimate for water used between the customer’s last meter reading and the end of the accounting period. At June 30, 2007, our unbilled revenue amount was $14.7 million and at December 31, 2006, the amount was $11.3 million. The unbilled revenue amount is generally higher during the summer months when water sales are higher. The amount recorded as unbilled revenue varies depending among other factors on:

• water usage in the preceding period;

• the number of days between meter reads for each billing cycle; and

• the number of days between each cycle’s meter reading and the end of the accounting cycle.

Flat rate customers are billed in advance at the beginning of the service period. The revenue is prorated so that the portion of revenue applicable to the current accounting period is included in that period’s revenue. The portion related to a subsequent accounting period is recorded as unearned revenue on the balance sheet and recognized as revenue when earned in the subsequent accounting period. Our unearned revenue liability was $2.2 million as of June 30, 2007, and as of December 31, 2006. This liability is included in “accrued expenses and other liabilities” on our accompanying condensed consolidated balance sheets.

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Expense-Balancing and Memorandum Accounts

We use expense-balancing accounts and memorandum accounts to track suppliers’ rate changes for purchased water, purchased power, and pump taxes that are not included in customer water rates. The cost changes are referred to as “offsetable expenses,” because under certain circumstances, they are refundable from customers (or refunded to customers) in future rates designed to offset cost changes from suppliers. We do not record the balancing and memorandum accounts until the commission has authorized a change in customer rates and the customer has been billed. The cumulative net amount in the expense balancing accounts and memorandum accounts as of June 30, 2007, was approximately $3.8 million. This amount includes certain amounts that have been filed for recovery but have not yet been authorized, and amounts that have not yet been filed for recovery. See “Regulatory Matters” below for a description of cumulative net balances of expense balancing and memorandum accounts that have been authorized for recovery.

Regulated Utility Accounting

Because we operate extensively in a regulated business, we are subject to the provisions of SFAS No. 71, “Accounting for the Effects of Certain Types of Regulation.” Regulators establish rates that are expected to permit the recovery of the cost of service and a return on investment. If a portion of our operations were no longer subject to the provisions of SFAS No. 71, we would be required to write off related regulatory assets and liabilities that are not specifically recoverable and determine if other assets might be impaired. If a regulatory commission determined that a portion of our assets were not recoverable in customer rates, we would be required to determine if we had suffered an asset impairment that would require a write-down in the assets’ valuation. There have been no such asset impairments as of June 30, 2007 and December 31, 2006.

Income Taxes

We account for income taxes using the asset and liability method. Deferred tax assets and liabilities are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. We measure deferred tax assets and liabilities at enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. We recognize the effect on the deferred tax assets and liabilities of a change in tax rate in the period that includes the enactment date. We must also assess the likelihood that deferred tax assets will be recovered in future taxable income and, to the extent recovery is unlikely, a valuation allowance would be recorded. If a valuation allowance were required, it could significantly increase income tax expense. In our management’s view, a valuation allowance was not required at June 30, 2007 or December 31, 2006.

We anticipate that future rate action by the regulatory commissions will reflect revenue requirements for the tax effects of temporary differences recognized, which have previously been passed through to customers. The regulatory commissions have granted us rate increases to reflect the normalization of the tax benefits of the federal accelerated methods and available Investment Tax Credits (ITCs) for all assets placed in service after 1980. ITCs are deferred and amortized over the lives of the related properties for book purposes.

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Pension Benefits

We incur costs associated with our pension and postretirement health care benefits plans. To measure the expense of these benefits, our management must estimate compensation increases, mortality rates, future health cost increases and discount rates used to value related liabilities and to determine appropriate funding. Different estimates used by our management could result in significant variances in the cost recognized for pension benefit plans. The estimates used are based on historical experience, current facts, future expectations, and recommendations from independent advisors and actuaries. We use an investment advisor to provide advice in managing the plan’s investments. We anticipate any increase in funding for the pension and postretirement health care benefits plans will be recovered in future rate filings, thereby mitigating the financial impact.

In September 2006, the FASB issued Statement of Financial Accounting Standards No. 158 “Employers’ Accounting for Defined Benefit Pension and Other Post Retirement Plans – An Amendment of FASB Statements 87, 88, 106 and 132(R).” We adopted SFAS No.158 as of December 31, 2006 which required the full recognition of the projected benefit obligation over the fair value of plan assets, reflecting the funded status of the benefit plans, on the balance sheet.

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RESULTS OF SECOND QUARTER 2007 OPERATIONS COMPARED TO SECOND QUARTER 2006 OPERATIONS

Overview

Second quarter net income was $7.7 million equivalent to $0.37 per common share on a diluted basis, compared to net income of $5.7 million or $0.31 common per share on a diluted basis in the second quarter of 2006. These positive results were primarily due to increased water usage by our customers due to dryer weather when compared with the prior year. In addition, we earned higher investment income from the cash proceeds from the equity offering in the fall of 2006. The effect of the higher number of common shares outstanding did not have a significant influence on the earnings per share.

We filed in July 2007 the General Rate Case (GRC) for Cal Water. The filing includes General Office (which covers the significant corporate costs) and eight of our districts. We are working with the California Public Utilities Commission (CPUC) as they implement their Water Action Plan. The plan focuses on four key principles, among other things, including safe, high quality water; highly reliable water supplies; efficient use of water; and reasonable rates and viable utilities.

Operating Revenue

Operating revenue increased $14.7 million or 18% to $95.8 million in the second quarter of 2007. As disclosed in the following table, the increase was due to increases in rates, increased usage by existing customers and usage by new customers.

The factors that impacted the operating revenue for the second quarter of 2007 compared to 2006 are presented in the following table (amounts in thousands):

Increase in usage by existing customers	$	9,886
Rate increases		4,022
Usage by new customers		772
Net operating revenue increase	$	14,680

The components of the rate increases are listed in the following table (amounts in thousands):

Step Rate Increase	$	1,798
General Rate Case (GRC) Increases		1,372
Purchased Water Offset Increases		838
Balancing Account Adjustments		(26	)
Other		40
Total Increase in Rates	$	4,022

Total Operating Expenses

Total operating expenses were $84.4 million for the three months ended June 30, 2007, versus $71.5 million for the same period in 2006, an 18% increase.

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Water production expense consists of purchased water, purchased power, and pump taxes. It represents the largest component of total operating expenses, accounting for approximately 44% of total operating expenses. Water production expenses increased 23% compared to the same period last year.

Sources of water as a percent of total water production are listed in the following table:

	Three Months Ended June 30
	2007			2006
Well production		48	%		50	%
Purchased		48	%		45	%
Surface		4	%		5	%
Total		100	%		100	%

Our wholly owned subsidiaries, Washington Water, New Mexico Water and Hawaii Water obtain all of their water supply from wells. The components of water production costs are shown in the table below:

	Three Months Ended June 30
	(amounts in thousands)
	2007		2006		Change
Purchased water	$	28,467	$	22,365	$	6,102
Purchased power		6,403		5,658		745
Pump taxes		2,401		2,187		214
Total	$	37,271	$	30,210	$	7,061

Purchased water costs increased primarily due to higher customer usage and higher wholesale water prices. Total water production measured in acre feet increased by 12.2% during the second quarter of 2007 as compared with the second quarter of 2006 due to the warmer weather and lack of precipitation, as compared to the same period in 2006.

Other operations expense increased 7% to $25.3 million. Payroll charged to operations increased 16%, including wage increases and an increase in the number of employees. At June 30, 2007, there were 873 employees and at June 30, 2006, there were 850 employees.

Maintenance expenses increased by $1.8 million to $5.2 million in the second quarter of 2007 compared to $3.4 million in the second quarter of 2006, due to the repair of mains, hydrants, and structures. Depreciation and amortization expense increased $0.7 million, or 9.7%, because of 2006 capital additions.

Federal and state income taxes increased $1.3 million, or 32.1%, from $4.1 million in the second quarter of 2006 to $5.4 million in the second quarter of 2007, due to increased pretax income compared to the same quarter as last year. The effective tax rate was 40.9% in the current quarter and

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41.5% for the same quarter last year. We expect the effective tax rate to be between 40% and 41% for 2007.

Other Income and Expense

Non-regulated income, net of related expenses, was $1.5 million for the quarter ended June 30, 2007, compared to $0.4 million in the same period last year, which is an increase of $1.1 million, driven primarily by an increase in investment income on short term cash and other investments. There were no property sales for the current quarter, although expenses were incurred on prior property sales. Gains from property sales were $0.3 million for the same quarter of 2006.

Interest Expense

Net interest expense increased $0.1 million to $4.5 million. This increase of interest expense was primarily due to a decrease in capitalized interest expense as compared to the prior year.

RESULTS OF OPERATIONS FOR THE SIX MONTHS ENDED JUNE 2007 COMPARED TO THE SIX MONTHS ENDED JUNE 2006

Overview

Net income for the six-month period ended June 30, 2007, was $9.3 million, or $0.45 per common share on a diluted basis, compared to net income of $6.5 million or $0.35 per share on a diluted basis, for the six months ended June 30, 2006. These positive results were primarily due to increased water usage by our customers due to dryer weather when compared with the prior year. In addition, we earned higher investment income from the cash proceeds from the equity offering in the fall of 2006.

Operating Revenue

Operating revenue increased $21.0 million, or 14%, to $167.4 million in the six-month period ended June 30, 2007. As disclosed in the following table, the increase was due to increases in rates, increased usage by existing customers due to dryer weather and less precipitation than the prior year, increases in rates, and new customers.

The factors that affected the operating revenue for the six-month period ending June 30, 2007 compared to 2006 are presented in the following table (amounts in thousands):

Usage by existing customers	$	13,048
Rate increases (net)		6,612
Usage by new customers		1,374
Net changes in operating revenue	$	21,034

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The components of the net rate increases are listed in the following table (amounts in thousands):

Step Rate Increase	$	3,038
General Rate Case (GRC) Increase		2,306
Purchased Water Offset Increase		1,340
Balancing Account Adjustments		(155	)
Other		83
Total increase in rates	$	6,612

Total Operating Expenses

Total operating expenses were $150.7 million for the six months ended June 30, 2007, versus $131.8 million for the same period in 2006, a 14% increase.

Water production expense consists of purchased water, purchased power and pump taxes. Water production expense represents the largest component of total operating expenses, accounting for approximately 42% of total operating expenses. Water production expenses increased $11.4 million in the six months ended June 30, 2007, or 22% compared to the same period last year.

Sources of water production as a percent of total water production are listed on the following table:

	Six Months Ended June 30
	2007			2006
Well production		45	%		48	%
Purchased		51	%		47	%
Surface		4	%		5	%
Total		100	%		100	%

Our wholly-owned operating subsidiaries, Washington Water, New Mexico Water and Hawaii Water, obtain all of their water supply from wells. The components of water production costs are shown in the table below:

	Six Months Ended June 30
	(amounts in thousands)
	2007		2006		Change
Purchased water	$	49,363	$	39,645	$	9,718
Purchased power		10,099		8,540		1,559
Pump taxes		3,622		3,454		168
Total	$	63,084	$	51,639	$	11,445

Purchased water cost increased due to higher prices from wholesaler and higher usage by customers. Included in purchased water are credits received from certain wholesale suppliers and the sale of unused water rights. The amounts of the credits were $734 and $631 for the six months ended June 30, 2007 and June 30, 2006, respectively. The increase in purchased power and pump taxes is primarily due to increased well production.

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Other operations expenses were $48.9 million, increasing $1.7 million, or 4%, for the six months ended June 30, 2007. Payroll and benefits charged to operations expense increased $801 for the six months ended June 30, 2007. Wages for union employees increased 4%, effective January 1, 2007. Overall payroll costs (expensed and capitalized) increased 9% for the six months ended June 30, 2007, due to increases in the number of employees and higher wage rates. At June 30, 2007, there were 873 employees and at June 30, 2006, there were 850 employees. Outside services increased $450 due to various initiatives, which included preparation of the recently filed General Rate Case.

Maintenance expense was up for the six months ended June 30, 2007, increasing $2.4 million, or 33%. Depreciation and amortization expense increased $1.4 million, or 9%, because of increased capital expenditures in 2006.

Federal and state income taxes increased $1.8 million, or 40.8%, for the six months ended June 30, 2007, due to the change in taxable income. We expect the effective tax rate to be between 40% and 41% for 2007.

Other Income and Expense

Other income was $1.6 million for the six months ended June 30, 2007, compared to $0.8 million for the first six-months of 2006, primarily due to increased investment income.

Interest Expense

Net interest expense increased $0.1 million to $8.9 million for the period ended June 30, 2007 compared to the six-month period ended June 30, 2006.

REGULATORY MATTERS

Rates and Regulations

The state regulatory commissions have plenary powers setting rates and operating standards. As such, state commission decisions significantly impact our revenues, earnings, and cash flow. The amounts discussed are generally annual amounts, unless specifically stated, and the financial impact to recorded revenue is expected to occur over a 12-month period from the effective date of the decision. In California, water utilities are required to make several different types of filings. Most filings result in rate changes that remain in place until the next GRC. As explained below, surcharges and surcredits to recover balancing and memorandum accounts as well as the catch-up are temporary rate changes, which have specific time frames for recovery.

GRCs, step rate increase filings, and offset filings change rates to amounts that will remain in effect until the next GRC. The CPUC follows a rate case plan, which requires Cal Water to file a GRC for each of its 24 regulated operating districts every three years. In a GRC proceeding, the CPUC not only considers the utility’s rate setting requests, but may consider other issues that affect the utility’s rates and operations. Effective in 2004, Cal Water’s GRC schedule was shifted from a calendar year to a fiscal year with test years commencing on July 1^st of each year. The CPUC is generally required to issue its GRC decision prior to the first day of the test year or authorize interim rates. As such, Cal Water’s GRC decisions, prior to 2005, were generally issued in the fourth quarter, but are expected to

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be issued in the second quarter of each year until 2011, when the updated rate case plan takes effect. A decision on the eight GRCs filed in July of 2006 was delayed beyond July 1, 2007. As required by state law, the Commission authorized interim rates incorporating the last twelve months change in CPI. Cal Water expects a final decision on the GRCs filed in July of 2006 to be issued in the third quarter of 2007. Rates from the final decision will have an effective date of July 1, 2007 for any subsequent final decision.

Between GRC filings, utilities may file step rate increases, which allow the utility to recover cost increases, primarily from inflation and incremental investment, during the second and third years of the rate case cycle. However, step rate increases are subject to a weather-normalized earnings test. Under the earnings test, the CPUC may reduce the step rate increase to prevent the utility from earning in excess of the authorized rate of return for that district. Step rate increases, which were previously approved in January, were approved in July until 2011, when the updated rate case plan takes effect.

In addition, utilities are entitled to file offset filings. Offset filings may be filed to adjust revenues for construction projects authorized in GRCs when the plant is placed in service or for rate changes charged to Cal Water for purchased water, purchased power, and pump taxes (referred to as “offsettable expenses”). Such rate changes approved in offset filings remain in effect until a GRC is approved.

Surcharges and surcredits, which are usually effective for a twelve-month period, are authorized by the CPUC to recover the memorandum and balancing accounts under- and over- collections usually due to changes in offsettable expenses. However, significant under-collection may be authorized over multiple years. Typically, an expense difference occurs during the time period from when an offsettable expense rate changes and we are allowed to adjust its water rates. Expense changes for this regulatory lag period, which is approximately two months, are booked into memorandum and balancing accounts for later recovery. These accounts are subject to reasonableness review. Future recovery of balancing account balances will be addressed in general rate cases or by advice letter filings if the account balance is greater than 2% of revenues. As of March 31, 2007 and June 30, 2007, the amount in the balancing accounts was $2.0 million and $3.8 million, respectively. The increase in the second quarter reflects a recent review by the Company of 2006 power rates in Southern California Edison tariff areas which the Company believes will be recoverable.

Cal Water does not record an asset (or liability) for the recovery (or refund) of expense balancing or memorandum accounts in its financial statements as revenue (refunds), nor as a receivable (or payable), until the CPUC and other regulators have authorized recovery and the customer is billed. Therefore, a timing difference may occur between the time when costs are recorded as an expense and when the associated revenues are received (or refunds are made) and booked.

Rate Case Plan

In December 2005, the CPUC issues the California Water Action Plan. The plan focuses on four key principles, among other things, including safe, high quality water; highly reliable water supplies;

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efficient use of water; and reasonable rates and viable utilities. In accordance with the Water Action Plan’s objective to streamline regulatory decision-making the Commission issued R.06-12-016 in December 2006, to address streamlining of its water rate case plan. The Commission issued D.07-05-062 on May 24, 2007 adopting a new rate case plan. As a result, Cal Water will be filing a company-wide general rate case every three years beginning in July 2009. Rates would be effective approximately 18 months from the filing date or January 1, 2011 in the first cycle. As an interim measure, the Commission will allow Cal Water to incorporate general operations costs including company benefits in rates for all districts after a decision in its 2007 general rate case. In addition, for the sixteen districts that have a delayed effective date, the Commission will authorize interim rates from the authorized effective date under the old rate case plan. These interim rates will be subject to adjustment based on a final determination in the 2009 general rate case filing.

Pending Filings as of June 30, 2007

Cal Water has pending its 2006 GRC filings covering eight districts. The Commission has authorized interim rates and an effective date of July 1, 2007 for the general rate change. This means that when the Commission issues a final rate determination, expected in the third quarter of 2007, the rates will be made effective on July 1, 2007. Any over- or under-collected rates between July 1, 2007 and the date of a final decision will be refunded or surcharged to customers in the affected districts. The amount requested in the 2006 GRCs is approximately $19.1 million in 2007/2008, $3.8 million in 2008/2009, and $3.8 million in 2009/2010. The amounts granted may vary due to a variety of factors. Over the past few years, the amount approved by the CPUC has been substantially less than the requested amount. The GRCs also requested the CPUC to consider several modifications to CPUC rate-setting procedures. The GRCs request a water revenue adjustment mechanism that would allow us to recover (refund) water revenues when actual water sales are below (above) adopted water sales in the GRCs. This proposal would decouple our revenues from conservation efforts and inaccurate weather forecasts, putting in place a mechanism similar to that employed by California’s investor-owned electric utilities. The GRCs also request a full-cost balancing account that would allow us to recover changes in source of supply mix as well as price changes under current procedures. Finally, we requested that the Commission adjust our authorized rate of return if modifications are not adopted to change certain rate-setting procedures. We are unable to predict the timing and final outcome of the filings at this time.

Additionally, Decision 06-08-011 directed Cal Water to file an application to implement conservation rates and a sales decoupling mechanism. On October 23, 2006, Cal Water filed Application 06-10-026 requesting a water revenue balancing account, a conservation memorandum account, and conservation rates. This request was consolidated with applications filed by other water companies in the Commission’s Order Instituting Investigation 07-01-022. A decision is expected during the third quarter of 2007.

2007 Regulatory Activity

Cal Water filed a general rate case application on July 3, 2007 for eight districts requesting $44.4 million in July 2008, $16.1 million in July 2009, and $14.8 million in July 2010. Included in the filing is a review of the company’s general operations costs including company benefits. At the conclusion of the proceeding, Cal Water would be allowed to increase rates in its other 16 districts to incorporate their portion of the adopted general operations costs. As filed, additional rate increases attributable to other districts would be $23.1 million in July 2008 and $5.9 million in July 2009. The

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amounts granted may vary due to a variety of factors. Over the past few years, the amount approved by the CPUC has been substantially less than the requested amount.

In January 2007, Cal Water requested step rate increases for seven districts and was authorized an increase of $1.8 million.

In April 2007, Cal Water requested an offset rate increase for increased purchased water and pump tax costs in its Stockton District. Cal Water was authorized an increase of $1.7 million in May 2007.

In May 2007, Cal Water requested a drought memorandum account to track lost revenue and corresponding production cost changes in three districts that purchase water from the San Francisco Public Utilities Commission (SFPUC). The SFPUC has requested 10% water conservation in its suburban service areas in 2007 due to low rainfall in the winter of 2006-2007. The requested memorandum account was granted in June 2007.

In May 2007, Cal Water requested step rate increases for fourteen districts and was authorized an increase of $4.6 million on July 1, 2007.

In June 2007, Cal Water filed for interim rates for eight districts in the 2006 GRC for which a decision was delayed. Cal Water was authorized an interim increase of $2.0 million in July 2007. These rates are subject to refund or adjustment based upon the final rates set in a decision on the 2006 general rate case.

In December 2006, Cal Water filed six advice letters to offset purchased water and pump tax increases of $3.4 million from wholesale suppliers effective January 1, 2007. These advice letters were approved in January and February 2007.

In December 2006, Cal Water filed an application to allow it to recover additional funding associated with its postretirement benefit other than pensions (PBOP) or retiree healthcare plan. Currently, Cal Water funds and recognizes expenses associated with the plan on a pay-as-you-go basis. The excess expense between pay-as-you-go and accrual during the employees’ expected service period has been recognized as a regulatory asset. As of December 31, 2006, the regulatory asset was approximately $9.8 million. In February 2007, the Division of Rate Payer Advocates (DRA) filed its protest to our PBOP application. In their protest, the DRA requested to dismiss the application with prejudice. The DRA further noted that prior to their protest, the parties met several times to discuss our application. During the discussions it became apparent to the DRA that negotiations would extend beyond the deadline for filing their protest. The DRA further noted that subsequent to this filing, the parties will continue their discussions to achieve a settlement that is reasonable, consistent with the law, and in the public interest. Cal Water intends to increase its funding so the plan is funded during the employee’s service period. Cal Water has established two Voluntary Employee Beneficiary Associations (VEBAs) to allow for increased funding and a current period income tax deduction. While the DRA has filed its protest, the ultimate outcome will be determined by the CPUC. Cal Water believes that the CPUC will recognize in rates the recovery of the regulatory asset and the additional funding of the plan. If the CPUC does not permit us to recover the full amount of our regulatory asset, the regulatory asset, to the extent not allowed in recovery, will be written off.

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LIQUIDITY

Cash flow from Operations

Cash flow from operations were $21.2 million for the six months ended June 30, 2007. Cash flow from operations is primarily generated by net income, non-cash expenses for depreciation and amortization, and changes in our operating assets and liabilities. Cash generated by operations varies during the year.

The water business is seasonal. Revenue is lower in the cool, wet winter months when less water is used compared to the warm, dry summer months when water use is highest. This seasonality results in the possible need for short-term borrowings under the bank lines of credit in the event cash is not available during the winter period. The increase in cash flow during the summer allows short-term borrowings to be paid down. Customer water usage can be lower than normal in years when more than normal precipitation falls in our service areas or temperatures are lower than normal, especially in the summer months. The reduction in water usage reduces cash flow from operations and increases the need for short-term bank borrowings. In addition, short-term borrowings are used to finance capital expenditures until long-term financing is arranged.

Investing Activities

During the six months ended June 30, 2007, we had company-funded capital cash expenditures of $39.4 million. For 2007, our capital budget is approximately $85 million.

Financing Activities

During the quarter ended June 30, 2007, there were no debt or equity offerings, as we had adequate funds from the equity offering of 2006. Dividend payments were higher than the prior year due to additional shares outstanding and a higher dividend rate in the current year.

Short-Term and Long-Term Debt

Short-term liquidity is provided by bank lines of credit and by internally generated funds. Long-term financing is accomplished through the use of both debt and equity. There were no short-term bank borrowings at June 30, 2007 and at December 31, 2006. Cash and cash equivalents were $29.8 million at June 30, 2007, and $60.3 million at December 31, 2006.

Cal Water has a $55 million credit facility agreement that expires April 30, 2012. The agreement requires debt as a percent of total capitalization to be less than 67%, and an interest coverage ratio of at least 2.5:1.0. As of June 30, 2007, we have met all covenant requirements and are eligible to use the full amount of the commitment. In addition to borrowings, the credit facility allows for letters of credit up to $10 million, which reduces the available amount to borrow when utilized. One letter of credit was outstanding at June 30, 2007, for $0.5 million related to an insurance policy. Interest is charged on a variable basis and fees are charged for unused amounts.

A separate credit facility for $20 million also exists for use by us and our subsidiaries, including Washington Water, New Mexico Water, and Hawaii Water. In addition to borrowings, the credit facility allows for letters of credit up to $5 million, which would reduce the amount available to

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borrow. No letters of credit were outstanding at June 30, 2007. Interest is charged on a variable basis and fees are charged for unused amounts.

There were no significant additions to long-term debt in the six-month period ended June 30, 2007, and we made principal payments on our first mortgage bonds and other long-term debt payments of $0.5 million during the six-month period ended June 30, 2007.

Long-term financing, which includes senior notes, other debt securities, and common stock, has been used to replace short-term borrowings and fund capital expenditures. Internally generated funds, after making dividend payments, provide positive cash flow, but have not been at a level to meet the needs of our capital expenditure requirements. Management expects this trend to continue given our capital expenditures plan for the next 5 years. Some capital expenditures are funded by payments received from developers for contributions in aid of construction or advances for construction. Funds received for contributions in aid of construction are non-refundable, whereas funds classified as advances in construction are refundable. Management believes long-term financing will be available to meet our cash flow needs through issuances in both debt and equity markets.

In September 2004, the CPUC issued a decision granting Cal Water authority to complete up to $250 million of equity and debt financing through 2010, subject to certain restrictions.

During 2006, we raised approximately $103 million of capital. Of this amount, $20 million was raised through privately placed senior unsecured notes. The remaining approximately $83 million was raised through the issuance of 2,250,000 shares of common stock. We anticipate that the majority of our 2007 capital needs will be covered by the $103 million raised in 2006. In future periods, management anticipates funding our capital needs through a relatively balanced approach between long term debt and equity.

In September 2006, we filed a shelf registration statement with the SEC for up to $150 million in preferred stock and common stock in addition to our prior shelf permitting up to $35.6 million in preferred stock and common stock. On October 12, 2006, we completed an underwritten public offering of 2,250,000 shares of our common stock (including 250,000 shares pursuant to the exercise, in part, by the underwriters of their over-allotment option) at a price per share of $36.75 to the public, raising approximately $83 million in gross proceeds. For additional information please reference our Form 8-K, dated October 12, 2006 on file with the SEC. After issuance of these shares, we had approximately $101 million in remaining securities available for future issuance under our shelf registration.

We do not utilize off-balance-sheet financing or utilize special purpose entity arrangements for financing. We do not have equity ownership through joint ventures or partnership arrangements.

Credit Ratings

Cal Water’s first mortgage bonds are rated by Moody’s Investors Service (Moody’s) and Standard & Poor’s (S&P). Previously, the two major credit facility agreements contained covenants related to these debt ratings. The current agreements do not contain such covenants. Since 2004, the two credit rating agencies maintained their ratings of A2 for Moody’s and A+ for S & P. Both agencies characterized us as stable. In the past, the agencies have been concerned over the rate-setting process and decisions by the CPUC. Also, concerns were raised about our present level of capital

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expenditures, which will need to be partially financed through long-term borrowings or equity offerings. Management believes we would be able to meet financing needs even if ratings were downgraded, but a rating change could result in a higher interest rate on new debt.

Dividends, Book Value and Shareholders

The second quarter common stock dividend of $0.2900 per share was paid on May 18, 2007, compared to a quarterly dividend in the second quarter of 2006 of $0.2875. This was Cal Water’s 250^th consecutive quarterly dividend. Annualized, the 2007 dividend rate is $1.16 per common share, compared to $1.15 in 2006. Based on the previous 12-month earnings per share at June 30, 2007, the dividend payout ratio is 82%. For the full year 2006, the payout ratio was 86% of net income. On a long-term basis, our goal is to achieve a dividend payout ratio of 60% of net income accomplished through future earnings growth.

At its July 25, 2007 meeting, the Board declared the third quarter dividend of $0.2900 per share payable on August 17, 2007, to stockholders of record on August 6, 2007. This will be our 251^st consecutive quarterly dividend.

2007 Financing Plan

Cal Water is currently reviewing its financing needs for 2007 and 2008. We may consider issuing equity or long-term debt to meet our financing needs. We intend to fund our capital needs in future periods through a relatively balanced approach between long-term debt and equity.

Book Value and Stockholders of Record

Book value per common share was $18.18 at June 30, 2007 compared to $18.31 at December 31, 2006.

There are approximately 2,537 stockholders of record for our common stock, as of the record date for our last shareholders meeting.

Utility Plant Expenditures

During the six months ended June 30, 2007, capital expenditures totaled $51.3 million; $39.4 million was from company-funded projects and $11.9 million was from third-party-funded projects. The planned 2007 company-funded capital expenditure budget is approximately $85 million. The actual amount may vary from the budget number due to timing of actual payments related to current year projects and prior year projects. We do not control third-party-funded capital expenditures and therefore is unable to estimate the amount of such projects for 2007.

At June 30, 2007, construction work in progress was $68.5 million compared to $35.7 million at December 31, 2006. Work in progress includes projects that are under construction but not yet complete and in service.

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WATER SUPPLY

Based on information from water management agencies and internally developed data, we believe that our various sources of water supply are sufficient to meet customer demand for the remainder of the year. Historically, about half of the water is purchased from wholesale suppliers with the other half pumped from underground wells. A small portion is developed through three local surface treatment plants.

CONTRACTUAL OBLIGATIONS

During the six months ended June 30, 2007, there were no material changes in contractual obligations outside the normal course of business.

Item 3.

QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

We do not hold, trade in or issue derivative financial instruments and therefore is not exposed to risks these instruments present. Our market risk to interest rate exposure is limited because the cost of long-term financing and short-term bank borrowings, including interest costs, is covered in consumer water rates as approved by the commissions. We do not have foreign operations; therefore, we do not have a foreign currency exchange risk. Our business is sensitive to commodity prices and is most affected by changes in purchased water and purchased power costs.

Historically, the CPUC’s balancing account or offsetable expense procedures allowed for increases in purchased water and purchased power costs to be passed on to consumers. Traditionally, a significant percentage of our net income and cash flows comes from California regulated operations; therefore the CPUC’s actions have a significant impact on our business. See Item 2, “Management’s Discussion and Analysis of Financial Condition and Results of Operations – Critical Accounting Policies —Expense Balancing and Memorandum Accounts” and “Regulatory Matters”.

Item 4.

CONTROLS AND PROCEDURES

(a) Evaluation of Disclosure Controls and Procedures

We carried out an evaluation, under the supervision of and with the participation of our management, including our principal executive officer and principal financial officer, of the effectiveness of the

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design and operation of our disclosure controls and procedures as of the end of the period covered by this report, pursuant to Rule 13a-15(e) under the Securities Exchange Act of 1934. Based on their review of our disclosure controls and procedures, the principal executive officer and principal financial officer have concluded that our disclosure controls and procedures are functioning effectively to provide reasonable assurance that the information required to be disclosed in periodic SEC filings is reported within the time periods specified by SEC rules and regulations.

(b) Changes to Internal Control Over Financial Reporting

There was no change in our internal control over financial reporting that occurred during the last fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

PART II OTHER INFORMATION

Item 1.

LEGAL PROCEEDINGS

As previously reported, the Company was served with a complaint in Superior Court County of Los Angeles Case No. BC360406 for personal injury, along with other defendants, due to exposure to asbestos. The plaintiff claims to have worked for three of the Company’s contractors on pipeline projects for the period 1958-1999 including Palos Verdes Water Company, a water utility acquired by us in 1970. The plaintiff alleges that the Company and other defendants are responsible for his asbestos related injuries. On April 20, 2007, the Court sustained the Company’s demur without leave to amend all Plaintiff’s claims alleging products liability and intentional torts. The Court also sustained the Company’s demur with leave to amend on Plaintiff’s claim for premise owner contractor liability, a negligence claim, alleging misconduct that may allow for punitive damages (Premise/Owner Claim), and the Court severed the Company from the accelerated trial with other named defendants. On July 3, 2007, the Court sustained the Company’s demur with leave to amend on the Plaintiff’s third amended complaint alleging the Premise/Owner Claim. Plaintiff has filed a fourth amended complaint restating the Premise/Owner Claim. The Company still believes that the plaintiff has failed to allege a legal claim against the Company, and the Company accordingly intends to file another demur and motions to aggressively defend itself. The Company’s insurance carrier has accepted the defense of the claim, reserving certain rights along with one of the contractor’s insurance company. We do not believe that the Company has any liability regarding this claim, but if the Company is found liable, any liability would probably be paid by the insurance companies. Accordingly, the Company has not recorded any liability associated with the claim.

On May 30, 2007, the Company was served with a complaint in Superior Court County of San Francisco Case No. CGC-07-274213 for personal injury, along with other defendants, due to exposure to asbestos. The plaintiffs, Company’s contractor employee (Contractor Employee) and his wife claim the Company and other defendants are responsible for Contractor Employee’s asbestos related injuries alleged due to product liability and negligence while Contractor Employee worked for an underground pipeline contractor. The complaint seeks unspecified general and punitive damages.

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The Company believes that plaintiffs have failed to allege a legal claim against the Company, and the Company has filed a demur and motions to aggressively defend itself. The Company has tendered the claim to its insurance carrier and intends to tender the claim to any contractor under contractual indemnification provision, once specifics of the claim are determined. We do not believe that the Company has any liability regarding this claim, but if the Company is found liable, any damages would probably be paid by insurance companies. Accordingly, the Company has not recorded any liability associated with the claim.

From time to time, we are involved in various disputes and litigation matters that arise in the ordinary course of business. Periodically, we review the status of each significant matter and assess its potential financial exposure. If the potential loss from any claim or legal proceeding is considered probable and the amount or the range of loss can be estimated, we accrue a liability for the estimated loss in accordance with SFAS No 5, “Accounting for Contingencies.” Legal proceedings are subject to uncertainties, and the outcomes are difficult to predict. Because of such uncertainties, accruals are based only on the best information available at the time. As additional information becomes available, we reassess the potential liability related to pending claims and litigation matters and may revise estimates.

While the outcome of these disputes and litigation matters cannot be predicted with any certainty, management does not believe that the ultimate resolution of these matters will materially affect our financial position, results of operations, or cash flows.

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Item 6.

EXHIBITS

Exhibit	Description
10.16	$20,000,000 Business Loan Agreement between Bank of America and California Water Service Group, CWS Utility Services, Washington Water Service Company, New Mexico Water Service Company, and Hawaii Water Service Company, Inc. dated May 30, 2007
10.17	$55,000,000 Business Loan Agreement between Bank of America and California Water Service Company dated May 30, 2007
31.1	Chief Executive Officer certification of financial statements pursuant to Section 302 of the Sarbanes- Oxley Act of 2002
31.2	Chief Financial Officer certification of financial statements pursuant to Section302 of the Sarbanes- Oxley Act of 2002
32.	Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes- Oxley Act of 202

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SIGNATURES

Pursuant to the requirement of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		CALIFORNIA WATER SERVICE GROUP
		Registrant
August 7, 2007
	By:	/s/ Martin A. Kropelnicki
		Martin A. Kropelnicki
		Vice President, Chief Financial Officer
		and Treasurer

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Exhibit Index

Exhibit	Description
10.16	$20,000,000 Business Loan Agreement between Bank of America and California Water Service Group, CWS Utility Services, Washington Water Service Company, New Mexico Water Service Company, and Hawaii Water Service Company, Inc. dated May 30, 2007
10.17	$55,000,000 Business Loan Agreement between Bank of America and California Water Service Company dated May 30, 2007
31.1	Chief Executive Officer certification of financial statements pursuant to Section 302 of the Sarbanes- Oxley Act of 2002
31.2	Chief Financial Officer certification of financial statements pursuant to Section 302 of the Sarbanes- Oxley Act of 2002
32	Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes- Oxley Act of 2002

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