Latest analysis
Updated Jul 31, 2026
Tetra Tech Q3 FY2026: USAID collapse drives 9.1% revenue decline YTD, but CIG segment and international business deliver offsetting growth
The cancellation of 83% of USAID programs eliminated approximately $360 million in YTD federal revenue, pushing Tetra Tech's nine-month consolidated revenue down 9.1% to $3.74 billion. The structural headwind is largely contained: excluding USAID/DOS and disaster response, GSG grew approximately 6% and the CIG segment posted 7.6% revenue growth with operating income up 9.4%. Backlog reached $4.5 billion at quarter-end, up from $4.1 billion at fiscal year-end, signaling demand recovery across water, environmental, and international infrastructure markets.
Tone: mixedRevenue
$5.4B
TTEK 10-K · FY 2025
Employees
25,000
Revenue growth YoY
+4.7%
Headquarters
Pasadena, CA
Profile
TTEK 10-K Item 1 · Nov 20, 2025Tetra Tech is a global consulting and engineering firm specializing in water, environment and sustainable infrastructure services for public and private clients across more than 100 countries. The company operates through two segments — Government Services Group and Commercial/International Services Group — serving U.S. federal, state and local government agencies alongside international and commercial clients. Its differentiated position rests on proprietary analytics and AI-enabled technologies branded as Tetra Tech Delta, which underpin its Leading with Science approach.
Read filing description ↓ Collapse description ↑
Tetra Tech, Inc. is a leading global provider of high-end consulting and engineering services that focuses on water, environment and sustainable infrastructure. We are a global company that is Leading with Science® to provide innovative solutions for our public and private clients. We typically begin at the earliest stage of a project by identifying technical solutions and developing execution plans tailored to our clients' needs and resources. Tetra Tech is Leading with Science® to provide sustainable and resilient solutions to our clients' most complex needs. Engineering News-Record ('ENR'), the engineering industry's leading magazine, has ranked Tetra Tech #1 in Water Treatment and Desalination for 12 years in a row. In 2025, we were also ranked #1 in consulting studies, environmental management, environmental science, wind power, hydro plants, site assessment and compliance, and green government offices. Our reputation for high-end consulting and engineering services and our ability to develop solutions for water and environmental management has supported our growth for more than 50 years. Our market leading climate mitigation and adaptation services are solving our clients' most complex challenges related to coastal flooding, water security, energy transition and biodiversity protection. In fiscal 2025, we worked on over 100,000 projects, in more than 100 countries on all seven continents, with more than 25,000 associates. We are Leading with Science® throughout our operations, with domain experts across multiple disciplines supported by our advanced analytics, artificial intelligence, machine learning and digital technology solutions. Our ability to provide innovative and first-of-kind solutions is enhanced by partnerships with our forward-thinking clients.
Primary products
- Water resources analysis and water management
- Environmental monitoring and data analytics
- Government consulting
- Waste management
- Civil infrastructure master planning and resilient engineering design
- Disaster response and community resilience services
Business segments
End markets
Geographies
Named customers
No single client, except for the U.S. federal government clients, accounted for more than 10% of our revenue in fiscal 2025.
Named competitors
“Engineering News-Record ('ENR'), the engineering industry's leading magazine, has ranked Tetra Tech #1 in Water Treatment and Desalination for 12 years in a row.” Competitive position, as stated in the filing
Revenue commentary · FY 2025
Total revenue grew 4.7% in fiscal 2025 driven by increased activity in U.S. state and local government and U.S. federal government client sectors, with approximately $80 million contributed by recent acquisitions.
The rest of TTEK is for subscribers
Analysis, signals, diligence answers, M&A activity and every quote, each citing the filing it came from.