Tetra Tech has been ranked as #1 in water by Engineering News-Record for 14 years in a row. Tetra Tech has helped provide access to safe, abundant water supplies; effective treatment of stormwater and wastewater; flood control and restoration tools; and innovative watershed protection approaches to assess, protect, and restore our water bodies.

Tetra Tech provided design services for a levee and removal flood wall system project in Washington, D.C., that protects the downtown area from Potomac River flooding. In addition, Tetra Tech works with major municipal areas in the United States to find new sources of water for their water supplies.