Company summary

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.

Products or services

Our core principles form the underpinning of how we work together to serve our clients.

Service: Tetra Tech puts its clients first. We listen better to understand our clients' needs and deliver smart, cost-effective solutions that meet those needs.
Value: Tetra Tech takes on our clients' problems as if they were our own. We develop and implement real-world solutions that are cost-effective, efficient, and practical.
Excellence: Tetra Tech brings superior technical capability, disciplined project management, and excellence in safety and quality to all of our work.
Opportunity: Our people are our number one asset. Our workforce is diverse and includes leading experts in our fields. Our entrepreneurial nature and commitment to success provide challenges and opportunities for all of our associates.


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

Employee benefits

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


David Spencer