Clean, safe water is essential to life—whether it’s drinking water, water for habitat, or water as the gateway to a community.

For 50 years, Tetra Tech has helped provide 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. Because Tetra Tech is involved in all phases of the water cycle, we use a truly integrated approach to manage our waters with a combination of state-of-the-art techniques and demonstrated best practices.

Tetra Tech has been ranked #1 in Water by Engineering News-Record magazine for 18 years in a row. We continually strive to make our solutions clearer and more efficient.


  • Water quality assessments
  • Treatability studies
  • Source water protection
  • Designated uses and water quality standards
  • Flood control and drainage master plans
  • Disaster prevention and contingency planning
  • Water rights and acquisitions
  • Econometrics and funding support
  • Stormwater management and Best Management Practices  
  • Feedlot and agricultural runoff control
  • Erosion control
  • Engineered wetlands
  • Stream channel restoration
  • Dam stabilization and removal
  • Habitat and ecosystem restoration
  • Regulatory compliance and support
  • Contaminated sediments stabilization and removal
  • Watershed management plans