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United States

Aerial view of a landfill gas beneficial-use project located among rolling hills

Tetra Tech’s presence in the United States has grown from a single office in Pasadena, California, in 1966 to a nationwide network of more than 300 offices.

We provide high-end, comprehensive engineering and consulting services for federal agencies, state and local governments, the military, and commercial clients throughout the United States and Puerto Rico.

With offices in every state, Tetra Tech brings local knowledge and technical expertise to every project. Whether an office houses 20 team members or 200, we maintain a broad and accessible presence to meet the unique needs of our clients. Our teams are at the forefront of innovation, spearheading some of Tetra Tech’s most advanced software and technology solutions to drive progress across the water, environment, and sustainable infrastructure sectors.

Our featured United States highlights

A laboratory centrifuge spins white sample tubes in a bright lab
  • Projects

Integrating Centrifuge Controls into SCADA System for Pharmaceutical Production
Aerial view of a city skyline at dusk with illuminated buildings and streets
  • Projects

Strengthening SCADA Cybersecurity and Automated Reporting for the City of Fresno
A sunny coastal beach with waves, sand, and a scenic overlook
  • Projects

Templatizing SCADA Design for the Carlsbad Municipal Water District
Industrial battery storage units in outdoor electrical cabinets
  • Projects

Deploying Battery Energy Storage SCADA for Renewable Grid Resilience in Stanton
A stock photo of transmission lines against a night sky with a line and dot connection graphic overlaid on the top of the image
  • Insights

Utility Resilience Without the Rate Shock: Balancing Resilience, Growth, and Affordability 
City of Laramie, Wyoming Wastewater Treatment Plant facility photo 
  • Projects

Optimizing Wastewater Treatment Energy Efficiency in Laramie, Wyoming
Chief Joseph Hatchery in Bridgeport, Washington
  • Projects

Restoring Chinook Salmon Populations Through Innovative Hatchery Design in Washington
Headshot of Amanda Smokoff
  • Expert Interviews

​​Amanda Smokoff Discusses Building Resilient Wastewater Systems Across the Front Range
Two large pipelines stretch across the ocean water toward the horizon under a partly cloudy sky
  • Projects

Migrating SCADA to an Open IIoT Platform to Optimize Water Infrastructure Delivery
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