Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide. With more than 25,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science ® to address the entire water cycle, protect and restore the environment, and design sustainable and resilient infrastructure. Tetra Tech has been Leading with Science® to address our clients’ most complex challenges since 1966.

Safety and sustainability are at the heart of our business. We improve the quality of life for people across the globe. Learn how we solve our clients’ problems with practical, innovative, sustainable solutions.

With 500 offices worldwide, we combine local understanding with the resources and expertise for the most demanding projects.