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Connecticut Water Service, Inc.

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Adapted from the English Wikipedia article Connecticut Water Service, Inc., available under CC BY-SA 4.0Updated 27 November 2025
Connecticut Water Service, Inc.
Company typePublic company
IndustryWater utility
FoundedFebruary 1, 1956; 70 years ago (1956-02-01) in Clinton, Connecticut, United States
DefunctOctober 9, 2019 (2019-10-09)
FateAcquired by SJW Group
Headquarters
Clinton
,
United States
Area served
Connecticut, Maine
ProductsWater supply, drainage, sewage treatment

Connecticut Water Service, Inc. was a regulated water company headquartered in Clinton, Connecticut, providing services across Connecticut and Maine under several different brand names. The company became part of the SJW Group following an acquisition completed in October 2019.

Business

The company managed and maintained water supply, drainage, and sewage treatment infrastructure in both Connecticut and Maine. Within Connecticut, it operated under the names Connecticut Water, Heritage Village Water, and Avon Water, while in Maine it was known as Maine Water.

History

Established on February 1, 1956, Connecticut Water Service was listed on the NASDAQ stock exchange with the ticker symbol CTWS.

In October 2018, the firm revealed plans to be acquired by the SJW Group, a water utility based in San Jose, subject to regulatory approval. Although Eversource Energy, which serves large portions of New England including areas overlapping with Connecticut Water’s territory, submitted a competing offer, Connecticut Water’s board endorsed the SJW Group’s proposal.

To complete the transaction, SJW Group formed Hydro Sub, Inc., a subsidiary created specifically for this purpose; this entity was dissolved on October 9, 2019, following the merger’s finalization.

References