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v3.25.3

Rate and Regulatory Matters (Details) $ in Millions |  |  | 1 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jan. 01, 2026 USD ($) | Jan. 01, 2025 USD ($) | Oct. 31, 2025 USD ($) customer | Jul. 31, 2025 USD ($) | Jun. 30, 2025 USD ($) | May 31, 2025 USD ($) entity | Feb. 28, 2025 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2025 USD ($) | Jun. 30, 2025 USD ($) | Sep. 30, 2025 USD ($) unit | Dec. 31, 2024 USD ($)
Subsequent Event | Tidewater | Pinewood Acres Water Utility Assets |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Asset [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Requested purchase of assets |  |  | $ 0.2 |  |  |  |  |  |  |  |  |
Number of customers served | customer |  |  | 350 |  |  |  |  |  |  |  |  |
DSIC |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Asset [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Approved increase amount in revenues |  |  |  |  |  |  |  |  |  |  |  | $ 2.3
DSIC | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Asset [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Requested increase in annual base revenues |  |  | $ 0.9 |  |  |  |  |  |  |  |  |
NJBPU |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Asset [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of entities seeking permissions for a corporate reorganization | entity |  |  |  |  |  | 3 |  |  |  |  |  |
Requested increase in annual base revenues |  |  |  |  | $ 24.9 |  |  |  |  |  |  |
Requested increase in annual base revenues percentage |  |  |  |  | 19.30% |  |  |  |  |  |  |
NJBPU | RESIC |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Asset [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Period for requested recovery of costs |  |  |  | 3 years |  |  |  |  |  |  |  |
Period for surcharge filings |  |  |  | 6 months |  |  |  |  |  |  |  |
Maximum value of costs to be recovered |  |  |  | $ 3.8 |  |  |  |  |  |  |  |
Maximum percentage of costs to be recovered |  |  |  | 2.50% |  |  |  |  |  |  |  |
NJBPU | DSIC |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Asset [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Period for requested recovery of costs |  |  |  | 3 years |  |  |  |  |  |  |  |
Period for surcharge filings |  |  |  | 6 months |  |  |  |  |  |  |  |
Maximum value of costs to be recovered |  |  |  | $ 7.6 |  |  |  |  |  |  |  |
Maximum percentage of costs to be recovered |  |  |  | 5.00% |  |  |  |  |  |  |  |
Approved increase amount in revenues |  |  |  |  |  | $ 1.1 |  |  |  |  |  |
NJBPU | PWAC |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Asset [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Approved recovery of costs |  |  |  |  |  |  | $ 0.5 |  |  |  |  |
NJBPU | LSLR |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Asset [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Approved recovery of costs |  |  |  |  |  |  |  |  |  | $ 0.3 |  |
Recovering costs |  |  |  |  |  |  |  |  |  |  | $ 0.6 |
DEPSC | Tidewater |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Asset [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Approved increase amount in revenues |  |  |  | $ 5.5 |  |  |  |  |  |  |  |
Approved recovery of costs |  |  |  |  |  |  |  | $ 2.1 |  |  |  |
Authorized return on common equity rate |  |  |  | 9.50% |  |  |  |  |  |  |  |
Authorized common equity ratio |  |  |  | 53.50% |  |  |  |  |  |  |  |
Amount spent to identify and inventory lead service lines |  |  |  |  |  |  |  |  |  |  | $ 1.8 |
DEPSC | Tidewater | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Asset [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Refund of excess deferred income taxes |  |  |  |  |  |  |  |  | $ 1.1 |  |  |
Refund of interest on excess deferred income taxes |  |  |  |  |  |  |  |  | $ 0.4 |  |  |
DEPSC | Southern Shores |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Asset [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Approved increase amount in revenues |  | $ 0.1 |  |  |  |  |  |  |  |  |  |
Number of unit condominium community entity provides water service to | unit |  |  |  |  |  |  |  |  |  |  | 2,200 |
Approved increase percentage in rates |  | 6.51% |  |  |  |  |  |  |  |  |  | 3.00%
DEPSC | Southern Shores | Forecast |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Asset [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Approved increase amount in revenues | $ 0.1 |  |  |  |  |  |  |  |  |  |  |
Approved increase percentage in rates | 4.89% |  |  |  |  |  |  |  |  |  |  |

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