New Standard Service Rates for Eversource and United Illuminating (UI) customers, covering the period from January through June 2025, have been announced. Customers are encouraged to check the rate board for up-to-date supply rate options at Energize CT

Connecticut's Investor-Owned Water Utilities

Class A Water Utilities (annual revenues of $500,000 or more):
Aquarion Water Company of Connecticut
The Avon Water Company
The Connecticut Water Company
The Hazardville Water Company
Heritage Village Water Company
The Jewett City Water Company
The Torrington Water Company
Valley Water Systems, Inc.

Class B Water Utilities (annual revenues of $100,000 to $499,999):
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Class C Water Utilities (annual revenues of less than $100,000):
Old Newgate Ridge Water Company, Inc.
Preston Plains Water Company