Headquartered in Walnut Creek, Calif., Brown and Caldwell is a privately-held, 100 percent environmental firm with 1,500+ professionals serving clients locally and globally. We are the largest engineering consulting firm in the U.S. focused solely on the water and environmental sector, a focus that has never been more important to our clients and our ability to support their vision. Since 1947, our creative designs and progressive solutions have helped municipal, federal and private organizations overcome their most complex environmental challenges. Our staff has a passion for delivering exceptional service, collaborating with clients, adding value through innovation and building relationships that last. We offer a comprehensive range of engineering, scientific, consulting and construction services and all the essential ingredients™ for a successful project and a standout experience.