Leading with Science®


Tetra Tech is a leading, global provider of consulting and engineering services. We are differentiated by Leading with Science® to provide innovative technical solutions to our clients. We support global commercial and government clients focused on water, environment, sustainable infrastructure, renewable energy, and international development. With 21,000 associates worldwide, Tetra Tech provides clear solutions to complex problems. 

Who We Are

Who we are

Since 1966, Tetra Tech has been Leading with Science® to address our clients’ most complex needs. Our mission is to be the premier worldwide consulting and engineering firm.

Our Approach

Our Approach

At Tetra Tech, we seek clear sustainable solutions that improve the quality of life. We embrace safety and sustainability in our business and operations.

Our Global Presence

Our Global Presence

Tetra Tech has 450 offices worldwide. We have the resources and global presence to complete today’s most demanding projects.

What We've Done

What we've done

Tetra Tech is a full-service company with a global reach in the areas of water, environment, infrastructure, resource management, energy, and international development. Read about our projects and company recognition.