Rate and Regulatory Matters	6 Months Ended
Jun. 30, 2022
Regulated Operations [Abstract]
Rate and Regulatory Matters	Note 2 – Rate and Regulatory Matters Middlesex – In December 2021, Middlesex’s petition to the NJBPU seeking permission to increase its base water rates was concluded, based on a negotiated settlement, resulting in an expected increase in annual operating revenues of $27.7 million. The approved tariff rates were designed to recover increased operating costs as well as a return on invested capital of $513.5 million, based on an authorized return on common equity of 9.6%. The increase is being implemented in two phases with $20.7 million of the increase effective January 1, 2022 and the remaining $7.0 million effective January 1, 2023. As part of the negotiated settlement, the Purchased Water Adjustment Clause (PWAC), which is a rate mechanism that allows for recovery of increased purchased water costs between base rate case filings, was reset to zero. In March 2022, Middlesex filed a petition with the NJBPU seeking approval to set its PWAC tariff rate to recover additional costs of $3.7 million for the purchase of treated water from a non-affiliated water utility regulated by the NJBPU. We cannot predict whether the NJBPU will ultimately approve, deny or reduce the amount of our request. Tidewater – On June 23, 2022, the Delaware Division of the Public Advocate filed a petition with the DEPSC requesting that Tidewater’s rates be reduced based on the claim that Tidewater has been earning above its authorized rate of return. Tidewater intends to vigorously defend against this proposed rate reduction based on current and near-term anticipated increases in operating costs and capital investments. Tidewater cannot predict whether the DEPSC will ultimately approve, deny or reduce the amount of the requested rate reduction. In June 2022, Tidewater notified the DEPSC of its intention to likely file for a base water rate increase in the first quarter of 2023 based on projected increases in operational expenses and capital spending. 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 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 Pennsylvania 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 Pennsylvania Court’s review of the merits arguments contained in Twin Lakes’ PFR. In December 2021, the Pennsylvania Court granted Twin Lakes’ emergency petition, pending its review. The timing of the final decision by the Pennsylvania Court and the final adjudication of this matter cannot be predicted at this time. The financial results, total assets and financial obligations of Twin Lakes are not material to Middlesex.

Rate and Regulatory Matters

6 Months Ended

Jun. 30, 2022

Note 2 – Rate and Regulatory Matters

Middlesex – In December 2021, Middlesex’s petition to the NJBPU seeking permission to increase its base water rates was concluded, based on a negotiated settlement, resulting in an expected increase in annual operating revenues of $27.7 million. The approved tariff rates were designed to recover increased operating costs as well as a return on invested capital of $513.5 million, based on an authorized return on common equity of 9.6%. The increase is being implemented in two phases with $20.7 million of the increase effective January 1, 2022 and the remaining $7.0 million effective January 1, 2023. As part of the negotiated settlement, the Purchased Water Adjustment Clause (PWAC), which is a rate mechanism that allows for recovery of increased purchased water costs between base rate case filings, was reset to zero.

In March 2022, Middlesex filed a petition with the NJBPU seeking approval to set its PWAC tariff rate to recover additional costs of $3.7 million for the purchase of treated water from a non-affiliated water utility regulated by the NJBPU. We cannot predict whether the NJBPU will ultimately approve, deny or reduce the amount of our request.

Tidewater – On June 23, 2022, the Delaware Division of the Public Advocate filed a petition with the DEPSC requesting that Tidewater’s rates be reduced based on the claim that Tidewater has been earning above its authorized rate of return. Tidewater intends to vigorously defend against this proposed rate reduction based on current and near-term anticipated increases in operating costs and capital investments. Tidewater cannot predict whether the DEPSC will ultimately approve, deny or reduce the amount of the requested rate reduction.

In June 2022, Tidewater notified the DEPSC of its intention to likely file for a base water rate increase in the first quarter of 2023 based on projected increases in operational expenses and capital spending.

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 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 Pennsylvania 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 Pennsylvania Court’s review of the merits arguments contained in Twin Lakes’ PFR. In December 2021, the Pennsylvania Court granted Twin Lakes’ emergency petition, pending its review. The timing of the final decision by the Pennsylvania Court and the final adjudication of this matter cannot be predicted at this time.

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