MWH Constructors Acquires Methuen Construction Company

Obayashi Corporation Acquires MWH

January 11, 2024

Infrastructure

Obayashi Corporation has acquired MWH, a U.S.-based water infrastructure contractor that operates MWH Constructors and subsidiaries Slayden Constructors and Methuen Construction. The acquisition positions Obayashi to expand its U.S. water infrastructure and industrial manufacturing capabilities and market share, enabling collaboration with Obayashi’s North American operations including Webcor Builders and Kraemer North America.

Verdantas Acquires M-H-M, Inc. to Expand Northern California Water Services

January 9, 2025

Environmental Services

Verdantas, a digitally enabled environmental and engineering consulting firm backed by Sterling Investment Partners, has acquired M-H-M, Inc. (MHM) of Marysville, California. The acquisition expands Verdantas' water, land development and surveying capabilities in northern California and strengthens its relationships with municipalities, public agencies and private clients in the region.

RailWorks Corp. Acquires H&H Engineering Construction

August 23, 2022

Transportation

RailWorks Corp., a Bernhard Capital Partners-backed specialty rail contractor, has acquired H&H Engineering Construction, a rail maintenance and construction contractor operating in the Western United States. The acquisition expands RailWorks' West Coast presence and capabilities, and allows H&H to leverage RailWorks' flash butt welding resources and broader maintenance-of-way platform.

Hydrobuilder Holdings Acquires New England Hydroponics

January 4, 2022

Retail

Hydrobuilder Holdings LLC acquired New England Hydroponics, adding five retail locations and warehouse capacity in Massachusetts and Maine and marking Hydrobuilder’s entry into the Northeastern U.S. The acquisition expands Hydrobuilder’s omnichannel footprint to 22 retail locations and 9 warehouses and is intended to accelerate growth in the Commercial and retail CEA (controlled-environment agriculture) markets.

CHA Holdings, Inc. Acquires Midwestern Engineers, Inc.

September 9, 2025

Engineering Services

CHA Holdings, Inc. (CHA) has acquired Midwestern Engineers, Inc., an Indiana-based civil and water resources engineering firm headquartered in Loogootee. The acquisition adds Midwestern’s ~45 technical experts and local offices in Indianapolis and Santa Claus to CHA’s existing Indiana teams, expanding CHA’s water, wastewater and stormwater capabilities and regional presence.

CPH Consulting Acquires Mittauer & Associates

April 3, 2025

Engineering Services

CPH Consulting, a member of the Trilon family (backed by Alpine Investors), has acquired Mittauer & Associates, a Florida-based engineering firm specializing in water, wastewater, civil and structural engineering. Heritage Capital Group served as exclusive financial advisor to Mittauer; terms were not disclosed.