Rate and Regulatory Matters	9 Months Ended
Sep. 30, 2023
Rate and Regulatory Matters [Abstract]
Rate and Regulatory Matters	Note 2 – Rate and Regulatory Matters Middlesex – In May 2023, Middlesex filed a petition with the NJBPU seeking permission to increase annual base water revenues by approximately $34 million. The request was necessitated predominantly by capital infrastructure investments Middlesex has made, or has committed to make, to upgrade or replace utility assets to support continued regulatory compliance and overall quality of service. We cannot predict when and whether the NJBPU will ultimately approve, deny, or reduce the amount of the request. Under New Jersey statute, the NJPBU must render a decision within nine months of filing a base rate change petition. Replacement of Middlesex and Middlesex customer-owned lead service lines is required by the New Jersey Lead Service Line Replacement Law. In May 2023, Middlesex filed a petition seeking NJBPU approval of Middlesex’s proposed cost recovery of its Lead Service Line Replacement Plan and cost recovery of project costs associated with replacing Middlesex customer-owned lead service lines. Under this legislation, these costs would be recovered through future customer surcharges. Middlesex currently estimates that replacement of Middlesex and Middlesex customer-owned lead service lines will be approximately $46 million to $77 million over a nine-year period. A decision in this matter is expected in the fourth quarter of 2023. We cannot predict if the NJBPU will ultimately approve, deny, or amend this petition. In May 2023, Middlesex filed a petition with the NJBPU seeking approval of a Distribution System Improvement Charge (DSIC) Foundation Filing, which is a prerequisite to implementing a DSIC rate that allows water utilities to recover investments in, and generate a return on, qualifying capital improvements to their water distribution system made between base rate proceedings. This petition was approved by the NJBPU in October 2023 and will result in future rate increases for future DSIC qualifying projects. In September 2022, the NJBPU approved Middlesex's Emergency Relief Motion to reset its Purchased Water Adjustment Clause (PWAC) tariff rate to recover additional costs of $2.7 million for the purchase of treated water from a non-affiliated water utility. A PWAC is a rate mechanism that allows for recovery of increased purchased water costs between base rate case filings. The increase, effective October 1, 2022, was on an interim basis and subject to refund with interest, pending final resolution of this matter, which the NJBPU provided in August 2023. In connection with the full recovery of the $2.7 million of additional costs, Middlesex reset its PWAC rate to zero in October 2023. Pinelands – On April 12, 2023, Pinelands Water and Pinelands Wastewater concluded their base rate case matters when the NJBPU approved a combined $1.0 million increase in annual base rates, effective April 15, 2023. The requests were necessitated by capital infrastructure investments the companies have made as well as increased operations and maintenance costs. Twin Lakes Utilities, Inc. (Twin Lakes) – Twin Lakes provides water services to approximately 115 residential customers in Shohola, Pennsylvania. Pursuant to the Pennsylvania Public Utility Code, Twin Lakes filed a petition requesting the Pennsylvania Public Utilities Commission (PAPUC) to order the acquisition of Twin Lakes by a capable public utility. The PAPUC assigned an Administrative Law Judge (ALJ) to adjudicate the matter and submit a recommended decision (Recommended Decision) to the PAPUC. As part of this legal proceeding the PAPUC also issued an Order in January 2021 appointing a large Pennsylvania based investor-owned water utility as the receiver (the Receiver Utility) of the Twin Lakes system until the petition is fully adjudicated by the PAPUC. In November 2021, the PAPUC issued an Order affirming the ALJ’s Recommended Decision, ordering the Receiver Utility to acquire the Twin Lakes water system and for Middlesex, the parent company of Twin Lakes, to submit $1.7 million into an escrow account within 30 days. Twin Lakes immediately filed a Petition For Review (PFR) with the Commonwealth Court of Pennsylvania (the Commonwealth Court) seeking reversal and vacation of the escrow requirement on the grounds that it violates the Pennsylvania Public Utility Code as well as the United States Constitution. In addition, Twin Lakes filed an emergency petition for stay of the PAPUC Order pending the Commonwealth Court’s review of the merits arguments contained in Twin Lakes’ PFR. In December 2021, the Commonwealth Court granted Twin Lakes’ emergency petition, pending its review. In August 2022, the Commonwealth Court issued an opinion upholding PAPUC’s November 2021 Order in its entirety. In September 2022, Twin Lakes filed a Petition For Allowance of Appeal (Appeal Petition) to the Supreme Court of Pennsylvania seeking reversal of the Commonwealth Court’s decision to uphold the escrow requirement on the grounds that the Commonwealth Court erred in failing to address Twin Lakes’ claims that because the $1.7 million escrow requirement placed on Middlesex violated Middlesex’s constitutional rights, Middlesex’s refusal to submit this escrow payment would jeopardize the relief Twin Lakes was otherwise entitled to in the appointment of the Receiver Utility. In March 2023, the Supreme Court of Pennsylvania issued a decision denying Twin Lakes’ Appeal Petition without addressing this claim on the merits. As a result of the Pennsylvania Courts’ failure to address Twin Lakes’ claim, Middlesex has subsequently filed a Complaint with the United States District Court for the Middle District of Pennsylvania to address the issue of whether the PAPUC’s Order violated Middlesex’s rights under the United States Constitution. We are currently awaiting the Court’s decision. The financial results, total assets and financial obligations of Twin Lakes are not material to Middlesex.

Rate and Regulatory Matters

9 Months Ended

Sep. 30, 2023

Rate and Regulatory Matters [Abstract]

Note 2 – Rate and Regulatory Matters

Middlesex – In May 2023, Middlesex filed a petition with the NJBPU seeking permission to increase annual base water revenues by approximately $34 million. The request was necessitated predominantly by capital infrastructure investments Middlesex has made, or has committed to make, to upgrade or replace utility assets to support continued regulatory compliance and overall quality of service. We cannot predict when and whether the NJBPU will ultimately approve, deny, or reduce the amount of the request. Under New Jersey statute, the NJPBU must render a decision within nine months of filing a base rate change petition.

Replacement of Middlesex and Middlesex customer-owned lead service lines is required by the New Jersey Lead Service Line Replacement Law. In May 2023, Middlesex filed a petition seeking NJBPU approval of Middlesex’s proposed cost recovery of its Lead Service Line Replacement Plan and cost recovery of project costs associated with replacing Middlesex customer-owned lead service lines. Under this legislation, these costs would be recovered through future customer surcharges. Middlesex currently estimates that replacement of Middlesex and Middlesex customer-owned lead service lines will be approximately $46 million to $77 million over a nine-year period. A decision in this matter is expected in the fourth quarter of 2023. We cannot predict if the NJBPU will ultimately approve, deny, or amend this petition.

In May 2023, Middlesex filed a petition with the NJBPU seeking approval of a Distribution System Improvement Charge (DSIC) Foundation Filing, which is a prerequisite to implementing a DSIC rate that allows water utilities to recover investments in, and generate a return on, qualifying capital improvements to their water distribution system made between base rate proceedings. This petition was approved by the NJBPU in October 2023 and will result in future rate increases for future DSIC qualifying projects.

In September 2022, the NJBPU approved Middlesex's Emergency Relief Motion to reset its Purchased Water Adjustment Clause (PWAC) tariff rate to recover additional costs of $2.7 million for the purchase of treated water from a non-affiliated water utility. A PWAC is a rate mechanism that allows for recovery of increased purchased water costs between base rate case filings. The increase, effective October 1, 2022, was on an interim basis and subject to refund with interest, pending final resolution of this matter, which the NJBPU provided in August 2023. In connection with the full recovery of the $2.7 million of additional costs, Middlesex reset its PWAC rate to zero in October 2023.

Pinelands – On April 12, 2023, Pinelands Water and Pinelands Wastewater concluded their base rate case matters when the NJBPU approved a combined $1.0 million increase in annual base rates, effective April 15, 2023. The requests were necessitated by capital infrastructure investments the companies have made as well as increased operations and maintenance costs.

Twin Lakes Utilities, Inc. (Twin Lakes) – Twin Lakes provides water services to approximately 115 residential customers in Shohola, Pennsylvania. Pursuant to the Pennsylvania Public Utility Code, Twin Lakes filed a petition requesting the Pennsylvania Public Utilities Commission (PAPUC) to order the acquisition of Twin Lakes by a capable public utility. The PAPUC assigned an Administrative Law Judge (ALJ) to adjudicate the matter and submit a recommended decision (Recommended Decision) to the PAPUC. As part of this legal proceeding the PAPUC also issued an Order in January 2021 appointing a large Pennsylvania based investor-owned water utility as the receiver (the Receiver Utility) of the Twin Lakes system until the petition is fully adjudicated by the PAPUC. In November 2021, the PAPUC issued an Order affirming the ALJ’s Recommended Decision, ordering the Receiver Utility to acquire the Twin Lakes water system and for Middlesex, the parent company of Twin Lakes, to submit $1.7 million into an escrow account within 30 days. Twin Lakes immediately filed a Petition For Review (PFR) with the Commonwealth Court of Pennsylvania (the Commonwealth Court) seeking reversal and vacation of the escrow requirement on the grounds that it violates the Pennsylvania Public Utility Code as well as the United States Constitution. In addition, Twin Lakes filed an emergency petition for stay of the PAPUC Order pending the Commonwealth Court’s review of the merits arguments contained in Twin Lakes’ PFR. In December 2021, the Commonwealth Court granted Twin Lakes’ emergency petition, pending its review. In August 2022, the Commonwealth Court issued an opinion upholding PAPUC’s November 2021 Order in its entirety. In September 2022, Twin Lakes filed a Petition For Allowance of Appeal (Appeal Petition) to the Supreme Court of Pennsylvania seeking reversal of the Commonwealth Court’s decision to uphold the escrow requirement on the grounds that the Commonwealth Court erred in failing to address Twin Lakes’ claims that because the $1.7 million escrow requirement placed on Middlesex violated Middlesex’s constitutional rights, Middlesex’s refusal to submit this escrow payment would jeopardize the relief Twin Lakes was otherwise entitled to in the appointment of the Receiver Utility. In March 2023, the Supreme Court of Pennsylvania issued a decision denying Twin Lakes’ Appeal Petition without addressing this claim on the merits. As a result of the Pennsylvania Courts’ failure to address Twin Lakes’ claim, Middlesex has subsequently filed a Complaint with the United States District Court for the Middle District of Pennsylvania to address the issue of whether the PAPUC’s Order violated Middlesex’s rights under the United States Constitution. We are currently awaiting the Court’s decision.

The financial results, total assets and financial obligations of Twin Lakes are not material to Middlesex.