As filed with the Securities and Exchange Commission on May 8, 2007

Registration No. 333-

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM S-8

REGISTRATION STATEMENT UNDER
THE SECURITIES ACT OF 1933

WATTS WATER TECHNOLOGIES, INC.
(Exact Name of Registrant as Specified in Its Charter)

Delaware		04-2916536
(State or Other Jurisdiction of Incorporation or Organization)		(I.R.S. Employer Identification No.)

815 Chestnut Street, North Andover, MA		01845
(Address of Principal Executive Offices)		(Zip Code)

WATTS WATER TECHNOLOGIES, INC.

Management Stock Purchase Plan (AMENDED AND RESTATED

AS OF JANUARY 1, 2005), as amended

(Full Title of the Plan)

Kenneth R. Lepage, Esq.

Assistant General Counsel

Watts Water Technologies, Inc.

815 Chestnut Street

North Andover, Massachusetts 01845

(Name and Address of Agent For Service)

(978) 688-1811

(Telephone Number, Including Area Code, of Agent For Service)

CALCULATION OF REGISTRATION FEE

Title of Securities to be Registered		Amount to be Registered(1)		Proposed Maximum Offering Price Per Share		Proposed Maximum Aggregate Offering Price		Amount of Registration Fee
Class A Common Stock, $0.10 par value per share		1,000,000 shares		$37.61(2)		$37,610,000(2)		$1,155

(1)	In accordance with Rule 416 under the Securities Act of 1933, as amended, this registration statement shall be deemed to cover any additional securities that may from time to time be offered or issued to prevent dilution resulting from stock splits, stock dividends or similar transactions.

(2)	Estimated solely for the purpose of calculating the registration fee pursuant to Rules 457(c) and 457(h) of the Securities Act of 1933, as amended, and based upon the average of the high and low prices of the Registrant’s Common Stock as reported on the New York Stock Exchange on May 4, 2007.

PART I
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

Item 1. Plan Information.

The information required by Item 1 is included in documents sent or given to participants in the plan covered by this registration statement pursuant to Rule 428(b)(1) of the Securities Act of 1933, as amended (the “Securities Act”).

Item 2. Registrant Information and Employee Plan Annual Information.

The written statement required by Item 2 is included in documents sent or given to participants in the plan covered by this registration statement pursuant to Rule 428(b)(1) of the Securities Act.

PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference.

The registrant is subject to the informational and reporting requirements of Sections 13(a), 14 and 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and in accordance therewith files reports, proxy statements and other information with the Securities and Exchange Commission (the “Commission”). The following documents, which are on file with the Commission, are incorporated in this registration statement by reference:

(a) The registrant’s latest annual report filed pursuant to Section 13(a) or 15(d) of the Exchange Act or the latest prospectus filed pursuant to Rule 424(b) under the Securities Act that contains audited financial statements for the registrant’s latest fiscal year for which such statements have been filed.

(b) All other reports filed pursuant to Section 13(a) or 15(d) of the Exchange Act since the end of the fiscal year covered by the document referred to in (a) above.

(c) The description of the securities contained in the registrant’s registration statement on Form 8-A filed under the Exchange Act, including any amendment or report filed for the purpose of updating such description.

All documents subsequently filed by the registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a post-effective amendment which indicates that all securities offered hereby have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference in this registration statement and to be part hereof from the date of the filing of such documents. Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for the purposes of this registration statement to the extent that a statement contained herein or in any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this registration statement.

Item 4. Description of Securities.

Not applicable.

Item 5. Interests of Named Experts and Counsel.

Not applicable.

Item 6. Indemnification of Directors and Officers.

Section 145 of the Delaware General Corporation Law provides that a corporation may indemnify any person who was or is a party or is threatened to be made a party to any threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative or investigative (other than an action by or in the right of the corporation) by reason of the fact that the person is or was a director, officer, employee or agent of the corporation, or is or was serving at the corporation’s request as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, against expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by the person in connection with the action, suit or proceeding if the person acted in good faith and in a manner the person reasonably believed to be in or not opposed to the best interests of the corporation, and, with respect to any criminal action or proceeding, had no reasonable cause to believe the person’s conduct was unlawful. The power to indemnify applies to actions brought by or in the right of the corporation as well, but only to the extent of expenses (including attorneys’ fees) but excluding judgments, fines and amounts paid in settlement, actually and reasonably incurred by the person in connection with the defense or settlement of the action or suit. And with the further limitation that in these actions, no indemnification shall be made in the event of any adjudication of negligence or misconduct in the performance of the person’s duties to the corporation, unless a court believes that in light of all the circumstances indemnification should apply.

In accordance with Section 102(b)(7) of the Delaware General Corporation Law, Article X of the Restated Certificate of Incorporation, as amended, of the registrant provides that no director of the registrant shall be personally liable to the registrant or its stockholders for monetary damages for breach of fiduciary duty as a director, except for liability (i) for any breach of the director’s duty of loyalty to the registrant or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) under Section 174 of the Delaware General Corporation Law, or (iv) for any transaction from which the director derived an improper personal benefit.

Article V of the Amended and Restated By-laws, as amended, of the registrant provides for indemnification by the registrant of its directors, officers and certain non-officer employees under certain circumstances against expenses (including attorneys’ fees) judgments, fines and amounts paid in settlement reasonably incurred in connection with the defense or settlement of any threatened, pending or completed legal proceeding in which any such person is involved by reason of the fact that such person is or was a director, an officer or an employee of the registrant, or is acting in any capacity with other entities at the request of the registrant, if such person acted in good faith and in a manner he or she reasonably believed to be in, or not opposed to, the best interests of the registrant, and with respect to criminal actions or proceedings, that such person had no reasonable cause to believe his or her conduct was unlawful.

Section 145(g) of the Delaware General Corporation Law and Article V of the Amended and Restated By-laws, as amended, of the registrant provide that the registrant shall have the power to purchase and maintain insurance on behalf of its officers, directors, employees and agents, against any liability asserted against and incurred by such persons in any such capacity. The registrant has obtained insurance covering its directors and officers against losses and insuring the registrant against certain of its obligations to indemnify its directors and officers. In addition, the registrant has entered into an indemnification agreement with certain of its directors and officers. The indemnification agreement

provides that the registrant will indemnify these directors and officers for expenses incurred because of their status as a director or officer of the registrant.

Item 7. Exemption from Registration Claimed.

Not applicable.

Item 8. Exhibits.

The Exhibit Index immediately preceding the exhibits is incorporated herein by reference.

Item 9. Undertakings.

1. Item 512(a) of Regulation S-K. The undersigned registrant hereby undertakes:

(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

(i) To include any prospectus required by Section 10(a)(3) of the Securities Act;

(ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement; and

(iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement;

provided, however, that paragraphs (i) and (ii) do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Commission by the registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that are incorporated by reference in the registration statement.

(2) That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

2. Item 512(b) of Regulation S-K. The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the registrant’s annual report pursuant to Section 13(a) or Section 15(d) of the Exchange Act that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

3. Item 512(h) of Regulation S-K. Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in North Andover, Massachusetts, on this 8th day of May, 2007.

	WATTS WATER TECHNOLOGIES, INC.

	By:	/s/ Patrick S. O’Keefe
		Patrick S. O’Keefe
		Chief Executive Officer, President and Director

POWER OF ATTORNEY AND SIGNATURES

We, the undersigned officers and directors of Watts Water Technologies, Inc., hereby severally constitute and appoint Patrick S. O’Keefe and William C. McCartney, and each of them singly, our true and lawful attorneys with full power to them, and each of them singly, to sign for us and in our names in the capacities indicated below, the registration statement on Form S-8 filed herewith and any and all subsequent amendments to said registration statement, and generally to do all such things in our names and on our behalf in our capacities as officers and directors to enable Watts Water Technologies, Inc. to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said registration statement and any and all amendments thereto.

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

Signature	Title	Date


/s/ Patrick S. O’Keefe	Chief Executive Officer, President and	May 8, 2007
Patrick S. O’Keefe	Director (Principal executive officer)


/s/ William C. McCartney	Chief Financial Officer and Treasurer	May 8 , 2007
William C. McCartney	(Principal financial and accounting officer)


/s/ Robert L. Ayers	Director	May 8, 2007
Robert L. Ayers


/s/ Timothy P. Horne	Director	May 8, 2007
Timothy P. Horne


/s/ Ralph E. Jackson, Jr.	Director	May 8, 2007
Ralph E. Jackson, Jr.

/s/ Kenneth J. McAvoy	Director	May 8, 2007
Kenneth J. McAvoy


/s/ John K. McGillicuddy	Director	May 8, 2007
John K. McGillicuddy


/s/ Gordon W. Moran	Director	May 8, 2007
Gordon W. Moran


/s/ Daniel J. Murphy, III	Director	May 8, 2007
Daniel J. Murphy, III

Number		Description

4.1(1)		Restated Certificate of Incorporation, as amended

4.2(2)		Amended and Restated By-Laws, as amended

5		Opinion of Wilmer Cutler Pickering Hale and Dorr LLP, counsel to the Registrant

23.1		Consent of Wilmer Cutler Pickering Hale and Dorr LLP (included in Exhibit 5)

23.2		Consent of KPMG LLP

24		Power of attorney (included on the signature pages of this registration statement)

(1)	Previously filed with the Securities and Exchange Commission as an Exhibit to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended July 3, 2005 (File No. 001-11499) and incorporated herein by reference.

(2)	Previously filed with the Securities and Exchange Commission as an Exhibit to the Registrant’s Current Report on Form 8-K dated February 5, 2007 (File No. 001-11499) and incorporated herein by reference.

PART I INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

Item 1. Plan Information.

Item 2. Registrant Information and Employee Plan Annual Information.

PART II INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference.

(b) All other reports filed pursuant to Section 13(a) or 15(d) of the Exchange Act since the end of the fiscal year covered by the document referred to in (a) above.

(c) The description of the securities contained in the registrant’s registration statement on Form 8-A filed under the Exchange Act, including any amendment or report filed for the purpose of updating such description.

Item 4. Description of Securities.

Item 6. Indemnification of Directors and Officers.

Item 7. Exemption from Registration Claimed.

Item 8. Exhibits.

Item 9. Undertakings.

1. Item 512(a) of Regulation S-K. The undersigned registrant hereby undertakes:

(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

(i) To include any prospectus required by Section 10(a)(3) of the Securities Act;

(iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement;

(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

PART I
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT