Leading with Science® to solve the world’s most complex problems
Tetra Tech is a leading, global provider of high-end consulting and engineering services. We are 27,000 employees dedicated to solving water, environment, sustainable infrastructure, renewable energy, and international development challenges for our clients and communities.
We use our Leading with Science® approach and leverage our Tetra Tech Delta technologies to create sustainable solutions for 100,000 projects in more than 100 countries on 7 continents each year.
Who we are
What we do
Learn how we solve our clients’ problems with practical, innovative, sustainable solutions.
Engineering News-Record #1 Rankings
in Water 20th year in a row
in Environmental Management
in Water Treatment/Desalination
in Wind Power
in Hydro Plants
- 2023: Climate Change Business Journal (CCBJ) and Environmental Business Journal (EBJ) project and business awards in March 2023. Read more.
- 2022: U.S. Small Business Administration Dwight D. Eisenhower Award, Excellence in Service Category. Read more.
- 2021: Society of American Military Engineers Large Business Award for achievement in small business mentorship. Read more.
- 2021: Newsweek’s list of America’s Most Responsible Companies 2021: Top 10 companies in the Professional Services category. Read more.