Our specialists at Coffey, A Tetra Tech company are experts in engineering, geotechnical, environmental, testing and project management services. 

For over 60 years Coffey, A Tetra Tech company has been the trusted advisers in specialist consulting and engineering services. From small beginnings, we’ve led the industry in our core markets to deliver the technical expertise and sustainable solutions our clients need.   

Tetra Tech is a leading provider of high-end consulting and engineering services for projects worldwide. With 20,000 associates working together, Tetra Tech provides clear solutions to complex problems in water, environment, infrastructure, resource management, energy, and international development. We are Leading with Science® to provide sustainable and resilient solutions for our clients.