Brown and Caldwell Email Format

Environmental ServicesCalifornia, United States1001-5000 Employees

Brown and Caldwell Consultants is an employee-owned environmental services firm headquartered in Walnut Creek, California. It concentrates on the United States water and environmental sectors and is described as the largest firm whose practice is solely devoted to these areas. From 52 locations, the company delivers a broad suite of engineering, scientific, consulting, and construction services to clients locally and globally. With roots dating to its founding in 1947 by Ken Brown and Dave Caldwell, the firm has grown into a sizable practice focused on solving water-related and environmental challenges.

Its client base spans municipal, federal, and private organizations seeking to address complex environmental issues, with service, collaboration, and innovative problem-solving at the core of its approach to delivering projects and maintaining lasting relationships. In 2026, Brown and Caldwell earned a National Recognition Award from the American Council of Engineering Companies for the Davis Aqueduct Reach 1 Parallel Pipeline Project, underscoring the firm's recognized contributions to the field.

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