Tetra Tech: Detailed Company Information & Corporate Profile
Summary
Tetra Tech is headquartered in Pasadena, CA, United States, with a workforce exceeding 10,000 professionals generating annual revenue between $1 billion and $5 billion.
The company operates within building engineering and delivers integrated solutions across water, energy, environment, infrastructure, international development, resource management, technology, high‑performance buildings, data analytics, artificial intelligence, asset management, design & engineering, emergency management, disaster recovery, laboratory services, solid waste, surveying & mapping.
Leadership includes Vice President Purshotam Juriasingani (Technology Development‑Emerging Contaminants), Vice President Daniel Grenier (Energy), Scott Martin (Regional Manager and VP), President Derek Cathro of Tetra Tech EGI, and other senior managers such as Nefi Garza PE, Tricia Moore, Amanda Hargrave, Chad Kano Farr, Andy Quan, Merrick Jackinsky, Luis, Winfried Gratkowski, Mariana Vidal, Martin Tolentino de Sousa, Rinaldo Mancin, and Ryan the wastewater operator.
| Tetra Tech Website | tetratech.com |
| Social Links |    |
| Phone Number | 1(626) 351-4664 |
| Industries | |
| Tetra Tech Headquarters Address | 3475 East Foothill Blvd., Pasadena, CA, 91107 US |
| Company Size | 10000+ employees |
| Specialities & Services | Water, Energy, Environment, Infrastructure, International Development, Resource Management, Technology Solutions, High Performance Buildings, Data Analytics, Artificial Intelligence, Asset Management, Design and Engineering, Emergency Management, Disaster Recovery, Laboratory Services, Solid Waste Solutions, Surveying and Mapping |
| Estimated Annual Revenue | $1B - 5B |
| Updated: | 2026-09-19 |
Competitors
Name | Founded | Type | Employees |
|---|---|---|---|
| 1914 | Public Company | 25 - 100 | |
| 1879 | Public Company | 10K - 50K | |
| 1923 | Public Company | 10K - 50K | |
| 1919 | Public Company | 10K - 50K |
Subsidiaries and Affiliated Companies
Estimated Website Traffic
The chart shows a decline in traffic to the tetratech.com website. In August, traffic decreased to 58822, compared to 62796 in the previous month. The highest traffic in 2026 was recorded in February, reaching 140549 visits.
Workforce Turnover
Number of employees switched from or switched to
Departmental sample breakdown
Length of Employment
Tetra Tech's workforce includes employees across a wide range of tenure levels.
8% have been with the company for 1 to 2 years14% have been with the company for 3 to 4 years19% have been with the company for 5 to 7 years16% have been with the company for 8 to 10 years43% have been with the company for more than 11 years
Companies Similar to Tetra Tech
Tetra Tech Corporate Information: FAQ
Data Privacy
GDPR COMPLIANT
SignalHire complies with the General Data Protection Regulation (GDPR). SignalHire follows GDPR requirements, including but not limited to rights of data subjects to access, correct, or delete their personal information and supports the right to be forgotten.
CCPA COMPLIANT
SignalHire is CCPA-compliant and provides California residents the right to know, access, opt out, and request deletion of their personal data.
