Tetra Tech, Inc. is a Pasadena, California-based consulting and engineering services firm. The company provides consulting, engineering, program management, and construction management services in the areas of water, environment, infrastructure, resource management, energy, and international development.

Tetra Tech is a leading provider of consulting and engineering services worldwide. We are a diverse company, including individuals with expertise in science, research, engineering, construction, and information technology. Our strength is in collectively providing integrated services—delivering the best solutions to meet our clients' needs.

Tetra Tech’s innovative, sustainable solutions help our clients address their water, environment, infrastructure, resource management, energy, and international development challenges. We are proud to be home to leading technical experts in every sector and to use that expertise throughout the project life cycle. Our commitment to safety is ingrained in our culture and at the forefront of every project.

To be the premier worldwide consulting and engineering firm, focusing on water, environment, infrastructure, resource management, energy, and international development services.

2018: U.S. Small Business Administration Dwight D. Eisenhower Award for Excellence, Los Angeles District. Read more.
2018: Environmental Business Journal Business Achievement Awards for Large Business (Silver Medal). Read more.
2017: Environmental Business Journal Business Achievement Awards for Large Business (Gold Medal), Project Merit—Clean Power for the Power Africa Transactions and Reforms Program, and Technology Merit—Water for the Lakewood, California, stormwater management project. Read more.
2017: Climate Change Business Journal Business Achievement Award for Project Merit—Climate Change Resilient Infrastructure for the green infrastructure project at Viola Liuzzo Park in Detroit, Michigan. Read more.
2017: Electrical Construction & Maintenance (EC&M) magazine's Top 40 Electrical Design Firms list: #3 electrical design firm
2016: Society of American Military Engineers Large Business Award for achievement in small business mentorship. Read more.
2016: Bentley Be Inspired Award for the Innovation in Mining Category. Read more.
2016: U.S. Agency for International Development’s Office of Small and Disadvantaged Business Utilization Mentor of the Year award. Read more.
2015: Environmental Business Journal Business Achievement Awards for Mergers & Acquisitions and Technology Merit for Los Angeles stormwater project
2015: Climate Change Business Journal Business Achievement Award for Project Merit for U.S. Agency for International Development greenhouse gas mitigation project in Indonesia
2015: Bentley Be Inspired Award for the Innovation in Mining Category. Read more.
2015: P3 Impact Award for the TV White Space Partnership. Read more.
2014: Air Traffic Control Association Industrial Award for outstanding achievement or contribution to the air traffic control sector. Read more.
2013: Environmental Business Journal Business Achievement Awards for Mergers & Acquisitions and Large Firms (Large Firms award also received 2008-2012)
2013: Climate Change Business Journal Consulting & Engineering: Climate Risk Management & Adaptation Award
2013: U.S. Small Business Administration Dwight D. Eisenhower Award, Excellence in Service Category. Read more.
2012: American Council of Engineering Companies (ACEC) "Grand Conceptor Award" for the U.S. Army Corps of Engineers Inner Harbor Navigation Canal Lake Borgne Surge Barrier, New Orleans, LA. Read more.
2012: Tetra Tech CEO Dan Batrack honored as one of the National Safety Council’s 2012 CEOs Who "Get It"
2012, 2011, 2010, 2009: ZweigWhite "Hot Firm"
2012: Public Works Magazine, "Top AEC Firms"
2012: Washington Technology Magazine, "Top 100 Federal Contractors"

At Tetra Tech, our employees are the foundation of our business, and safety is a priority at all worksites. Our Health & Safety processes are vital and integral to our work. The following principles provide the framework as we continue to strive for zero incident performance:

Management commitment
Clearly communicated roles and responsibilities
Allocation of sufficient resources
Systems and processes that integrate health and safety with operations
Appropriate training
Active employee participation
These principles are supported in our written Health & Safety program, which is endorsed and monitored by our executive management team.

Tetra Tech employees accept responsibility and accountability for safety planning and ensure that safety measures are implemented. We actively work to prevent incidents by regularly evaluating performance and taking the actions necessary for continual improvement.

Dan L. Batrack
Chief Executive Officer
Tetra Tech

Tetra Tech serves public and private clients by addressing fundamental needs for water, environment, infrastructure, resource management, energy, and international development services. We provide clients with technical studies, planning, engineering, design, and construction management solutions to address their needs.

Our clients vary in size and scope from small, local public agencies and private companies to national governments and large multi-national corporations. These clients come to Tetra Tech for high-caliber technical expertise, practical experience, multi-disciplinary capabilities, and the global reach needed to analyze their problems, and develop and implement the most appropriate, cost-effective solutions.