Improving lives around the world by Leading with Science®

NDY is part of Tetra Tech, the leader in water, environment, and sustainable infrastructure and buildings, providing high-end consulting and engineering services for projects worldwide.

With 30,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science®, offering clear solutions made possible with sound science, understanding, innovation and industry-leading approaches.

Tetra Tech is built on a culture of innovation and committed to creating positive, impactful change as we address the world’s most complex problems.

We are proud to be home to industry-leading scientists, engineers, and technical specialists and to use this expertise throughout the project life cycle. Our strength is in collectively providing integrated services—delivering the best solutions to meet our clients’ needs.