Brown and Caldwell, headquartered in Walnut Creek, CA, is the largest employee-owned engineering firm exclusively serving the U.S. water and environmental sectors. With 2,100+ professionals across 52 locations, we've delivered innovative solutions for complex environmental challenges since 1947. Our comprehensive engineering, scientific, consulting, and construction services reflect our founders' commitment to exceptional service, technical excellence, and innovation—values that remain essential to our client relationships today.