California American Water Acquires Warring Water Services, Inc.

California American Water Acquires Yerba Buena Water Company

December 9, 2025

Utilities

California American Water has completed the acquisition of the Yerba Buena Water Company water system, a regulated system serving approximately 250 customers after receiving CPUC approval. The acquisition will transfer service to California American Water immediately and is part of the company’s ongoing inorganic growth in California.

California American Water Acquires Bass Lake Water Company System

August 19, 2025

Utilities

California American Water has completed the acquisition of the Bass Lake Water Company system, which serves approximately 1,000 customers in Bass Lake, California. The transaction, approved earlier by the California Public Utilities Commission, will transfer operations to California American Water on August 19, 2025 and is intended to strengthen local water infrastructure and service.

California American Water Acquires Mesa Del Sol Water System

May 21, 2025

Utilities

California American Water, a subsidiary of American Water, has acquired the Mesa Del Sol water system in the Corral de Tierra area of Salinas, adding 15 customer connections. The acquisition follows a physical interconnection with California American Water's Toro Park system to resolve water quality issues and will give new customers access to the company's bilingual customer service, online billing, conservation programs and affordability offerings.

West Virginia American Water Acquires Jefferson Utilities

October 2, 2023

Utilities

West Virginia American Water, a subsidiary of American Water, completed the acquisition of Jefferson Utilities (including assets of Valley Water and Sewer Services, Shenandoah Junction Public Sewer and East Jefferson Sewer Services) for $27 million. The combined systems serve 3,978 customer connections across Jefferson, Berkeley and Morgan counties; the buyer plans infrastructure updates and will transition customers to West Virginia American Water service and PSC-established rates. The seller/owner, Lee Snyder, is retiring after building the systems over 25 years.

Hawaii American Water Acquires Waimea Wastewater Company

June 1, 2020

Utilities

Hawaii American Water acquired the assets and operations of Waimea Wastewater Company, becoming the wastewater service provider for approximately 217 residential and commercial connections, including North Hawaii Community Hospital and the Parker Ranch Center. Waimea Wastewater was a wholly owned subsidiary of Parker Ranch; the acquisition expands Hawaii American Water’s regulated service footprint on the Big Island of Hawaii (Hawaii American Water is a regional subsidiary of publicly traded American Water).

Water Engineering (Nolan Capital Portfolio) Acquires American Water Treatment, Inc.

July 13, 2022

Environmental Services

Water Engineering, a portfolio company of Nolan Capital, has acquired American Water Treatment, a family-owned water treatment services provider headquartered in St. Louis, Missouri. The acquisition adds American Water’s ~900-customer, multi-state footprint to the WEI platform as an add-on to expand geographic coverage and service capabilities while retaining the existing team and legacy brand.