Tetra Tech's Center for Water Resources, headquartered in Fairfax, Virginia, provides innovative, cost-effective engineering and management consulting services to meet today's environmental challenges. We've found new ways to protect the nation's water resources. The tools we've developed range from biological monitoring to sophisticated numerical models and interactive databases. Our policy tools are designed to integrate the full range of assessment, monitoring, and water quality standards programs, including antidegradation.

Founded in 1966, Tetra Tech has grown to 7,500 employees with a network of 350 offices nationwide and internationally working with clients in the areas of resource management and infrastructure. The corporate web site provides information about the network.