Brown and Caldwell is an engineering, science, consulting and construction firm working on water resources management, critical infrastructure and natural habitat protection. Founded in 1947 by Ken Brown and Dave Caldwell and headquartered in Walnut Creek, California, it is the largest engineering and construction firm focused solely on the United States' water and environmental sectors. Its technical work spans water resources and environmental engineering, water and wastewater treatment, ecosystem restoration, infrastructure management, climate change resilience, environmental remediation, engineering design, consulting and construction.
The firm serves municipal, private and federal clients across the water and wastewater utilities, government, environmental services and infrastructure sectors. Its service lines cover water supply and treatment, wastewater reclamation, the management and maintenance of critical water and environmental infrastructure, solutions for community resilience to climate change impacts, and the restoration of ecosystems and remediation of environmental contamination.
Brown and Caldwell employs over 2,400 employee-owners through an employee-owned structure, working from more than 50 offices across North America and the Pacific. The firm describes its approach as oriented toward creative design, efficiency, cost reduction and sustainability goals, and states a commitment to environmental stewardship and to innovation in science and practice.
