NW Natural Water Agrees to Buy Ownership Stake in Avion Water Company

Unitil Completes Purchase of Aquarion Water Company of New Hampshire and Abenaki Water Co.

June 30, 2026

Infrastructure

Unitil Corporation completed the acquisition of two regulated water utilities—Aquarion Water Company of New Hampshire, Inc. and Abenaki Water Co., Inc.—from the Aquarion Water Authority. The purchase price was $55.8 million (including assumed debt), and Unitil expects the deal to be earnings accretive over the long term.

Northwest Natural Holding Company to Acquire SiEnergy Operating, LLC

January 8, 2025

Utilities

Northwest Natural Holding Company (NYSE: NWN) entered into an agreement to acquire SiEnergy Operating, LLC from SiEnergy Capital Partners, LLC for $273 million in cash plus the assumption of $152 million of debt. Ridgewood Infrastructure announced the successful sale of its 80% interest in SiEnergy to Northwest Natural.

NW Natural Water Acquires Rose Valley Water Company

October 2, 2023

Utilities

NW Natural Water Company, a wholly-owned subsidiary of Northwest Natural Holding Company, completed the acquisition of Rose Valley Water Company, a family-owned water utility serving approximately 2,400 connections in Peoria, Arizona. The transaction closed on October 2, 2023, giving NW Natural Water an initial footprint in Maricopa County and positioning the company for further growth in Arizona.

NW Natural Water Acquires Far West's Foothills Water and Wastewater Utilities

October 5, 2022

Utilities

NW Natural Water Company, a subsidiary of Northwest Natural Holding Company, has completed the acquisition of the water and wastewater utilities of Far West Water & Sewer, Inc., serving the Foothills area of Yuma, Arizona. The acquired utilities (doing business as Foothills Utilities) serve roughly 25,000 connections and employ about 40 people; the deal expands NW Natural Water's operations into Arizona.

NW Natural Water Acquires Northwest Water Services and Aquarius Utilities

May 26, 2022

Utilities

NW Natural Water Company, LLC (a subsidiary of Northwest Natural Holding Company) signed agreements to acquire Northwest Water Services and Aquarius Utilities, which together serve about 1,400 connections in Washington near its existing Cascadia Water footprint. The deals are subject to customary closing conditions, including Washington Utilities and Transportation Commission approval, and are expected to close in 2022.

Nolan Capital Acquires Majority Stake in Water Engineering, Inc.

March 21, 2022

Industrial Services

Nolan Capital, the family office of Peter Nolan, has acquired a majority stake in Water Engineering, Inc., a Omaha-based provider of industrial water treatment solutions, chemicals and services. Nolan Capital’s Southern California portfolio company, Apollo Technologies, will join the combined Water Engineering platform as the investor and management team intend to pursue further acquisitions to build a national water treatment platform.