Tetra Tech, Inc.
Rank #112 of 1,000 by FY2025 federal contract value · Headquarters: PASADENA, CA
FY2025 contract value
$714,194,574
Oct 1, 2024 – Sep 30, 2025
FY2024 contract value
$950,716,035
FY2023 contract value
$1,005,309,834
Top agency (FY2025)
Department of Defense
$237,902,645
Company profile
- Legal name (as listed)
- TETRA TECH, INC.
- UEI
- LMRMKLLL3LG5
- DUNS
- 045224250
- Headquarters
- PASADENA, CA
- Business types
- Category BusinessCorporate Entity Not Tax ExemptOther Than Small BusinessSpecial DesignationsUS Owned Business
Contract value trend, FY2023 – FY2025
| Fiscal year | Contract value | Change vs prior year |
|---|---|---|
| FY2023 | $1,005,309,834 | — |
| FY2024 | $950,716,035 | -5.4% |
| FY2025 | $714,194,574 | -24.9% |
FY2025 breakdowns
Top 10 in each category by FY2025 contract value.
Top awarding agencies
| Department of DefenseDOD | $237,902,645 |
| Department of TransportationDOT | $133,077,340 |
| Department of StateDOS | $112,859,345 |
| Agency for International DevelopmentUSAID | $103,980,593 |
| Environmental Protection AgencyEPA | $62,778,998 |
| National Aeronautics and Space AdministrationNASA | $24,345,837 |
| Department of EnergyDOE | $20,165,692 |
| Department of LaborDOL | $6,794,824 |
| Department of Homeland SecurityDHS | $6,191,663 |
| Department of the InteriorDOI | $5,108,694 |
Top places of performance (states)
| District Of ColumbiaDC | $145,000,085 |
| VirginiaVA | $54,520,796 |
| TexasTX | $26,903,536 |
| WyomingWY | $25,571,238 |
| ColoradoCO | $22,182,885 |
| MontanaMT | $20,576,687 |
| ArizonaAZ | $19,680,662 |
| New JerseyNJ | $18,801,964 |
| MassachusettsMA | $17,110,807 |
| GeorgiaGA | $16,477,786 |
Top industries (NAICS)
| Engineering Services541330 | $343,485,646 |
| Remediation Services562910 | $146,380,782 |
| Environmental Consulting Services541620 | $103,241,390 |
| Administrative Management and General Management Consulting Services541611 | $39,683,536 |
| All Other Professional, Scientific, and Technical Services541990 | $26,414,946 |
| Other Computer Related Services541519 | $16,876,190 |
| Custom Computer Programming Services541511 | $13,902,450 |
| Architectural Services541310 | $12,379,674 |
| Environment, Conservation and Wildlife Organizations813312 | $5,000,000 |
| Computer Systems Design Services541512 | $3,653,163 |
Top product & service codes (PSC)
| SUPPORT- PROFESSIONAL: PROGRAM MANAGEMENT/SUPPORTR408 | $161,438,999 |
| SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICALR425 | $93,765,391 |
| SUPPORT- PROFESSIONAL: OTHERR499 | $79,146,524 |
| ARCHITECT AND ENGINEERING- GENERAL: OTHERC219 | $70,489,474 |
| ENVIRONMENTAL SYSTEMS PROTECTION- ENVIRONMENTAL LICENSING AND PERMITTINGF114 | $45,695,773 |
| ARCHITECT AND ENGINEERING- GENERAL: LANDSCAPING, INTERIOR LAYOUT, AND DESIGNINGC211 | $41,056,853 |
| MODIFICATION OF EQUIPMENT- AIRCRAFT LAUNCHING, LANDING, AND GROUND HANDLING EQUIPMENTK017 | $37,551,410 |
| ENVIRONMENTAL SYSTEMS PROTECTION- ENVIRONMENTAL REMEDIATIONF108 | $33,587,380 |
| SUPPORT- PROFESSIONAL: EMERGENCY RESPONSE/DISASTER PLANNING/PREPAREDNESS SUPPORTR429 | $31,069,916 |
| SPECIAL STUDIES/ANALYSIS- ENVIRONMENTAL ASSESSMENTSB510 | $21,569,308 |
Contract awards
Up to 20 awards with activity in FY2025, newest start date first. Amounts are individual award obligations, not company totals.
CONT_AWD_W912QR25FA159_9700_W912QR23D0047_9700
$1,177,838
Awarding agency: Department of Defense
Description: ARMY RESERVE CENTER OF THE FUTURE CONCEPT DEVELOPMENT
Start date: Sep 26, 2025
NAICS: —
PSC: —
Place: WA
CONT_AWD_W912UM25F0067_9700_W912UM23D0006_9700
$71,882
Awarding agency: Department of Defense
Description: A-E SERVICE, CONSTRUCTION PHASE SERVICES FOR FY24 SMYU21-1117 REPAIR SEWER LIFT STATIONS B659, B823, B1356 AND B1706, OSAN AB, KOREA
Start date: Sep 18, 2025
NAICS: —
PSC: —
Place: —
CONT_AWD_W912PQ25FA030_9700_GS00F168CA_4732
$158,467
Awarding agency: Department of Defense
Description: NYS LEAD AND COPPER SERVICE LINE INVENTORY
Start date: Aug 29, 2025
NAICS: —
PSC: —
Place: NY
CONT_AWD_W912UM25F0039_9700_W912UM23D0006_9700
$169,048
Awarding agency: Department of Defense
Description: CONSTRUCTION PHASE SERVICES (CPS) FOR FY24 OMA C-TYPE REPAIR SCADA WIRING SYSTEM, USAG HUMPHREYS, KOREA.
Start date: Jul 28, 2025
NAICS: —
PSC: —
Place: —
CONT_AWD_W912UM25F0034_9700_W912UM23D0006_9700
$790,179
Awarding agency: Department of Defense
Description: AE, WATER FILTRATION SYSTEM FOR TRI-SERVICE HANGER, POHANG, KOREA
Start date: Jul 10, 2025
NAICS: —
PSC: —
Place: —
CONT_AWD_W912UM25F0015_9700_W912UM23D0006_9700
$66,421
Awarding agency: Department of Defense
Description: CONSTRUCTION PHASE SERVICES FOR CY23 ROKFC IN-KIND, N22R700, RELOCATE WATER TREATMENT PLANT, CFA, CHINHAE, KOREA
Start date: Apr 22, 2025
NAICS: —
PSC: —
Place: —
CONT_AWD_W912UM25F0004_9700_W912UM23D0006_9700
$1,338,201
Awarding agency: Department of Defense
Description: ARCHITECT-ENGINEER (A-E) SERVICES, CY25 ROKFC IN-KIND, A16R700, UPGRADE WATER DISTRIBUTION SYSTEM DAEGU AIR BASE, KOREA
Start date: Nov 25, 2024
NAICS: —
PSC: —
Place: —
CONT_AWD_W912UM25F0002_9700_W912UM23D0006_9700
$1,366,251
Awarding agency: Department of Defense
Description: AE, CY25 ROKFC IN-KIND, PN O22R600 TEMF, BONIFAS, KOREA
Start date: Oct 15, 2024
NAICS: —
PSC: —
Place: —
CONT_AWD_W912PP24F0024_9700_W912PP19D0025_9700
$64,438
Awarding agency: Department of Defense
Description: NUMERICAL MODELING OF JOHN MARTIN RESERVOIR
Start date: Sep 10, 2024
NAICS: —
PSC: —
Place: NM
CONT_AWD_W9133L24FA013_9700_GS00Q14OADU138_4732
$1,870,387
Awarding agency: Department of Defense
Description: THESE ENVIRONMENTAL REMEDIATION SERVICES INCLUDE RAO, LTM, AND SCO ACTIVITIES, AS DEFINED IN THIS PWS. ENCLOSURE 3 PWS FY24 REMEDIAL ACTIONS WEST DATED 11 APRIL 2024 CAN BE FOUND AS AN ATTACHMENT OF SECTION J.
Start date: Aug 6, 2024
NAICS: —
PSC: —
Place: CA
CONT_AWD_W912UM24F0054_9700_W912UM23D0006_9700
$148,221
Awarding agency: Department of Defense
Description: ARCHITECT-ENGINEER (A-E) SERVICES: FY24 RENOVATE ROOM INTO CULINARY ARTS LAB DODEA, CAMP WALKER, DAEGU, REPUBLIC OF KOREA
Start date: Jul 30, 2024
NAICS: —
PSC: —
Place: —
CONT_AWD_W912UM24F0004_9700_W912UM19D0004_9700
$591,568
Awarding agency: Department of Defense
Description: AE SERVICES, CORROSION CONTROL FACILITY, B2820, KUNSAN AB
Start date: Oct 23, 2023
NAICS: —
PSC: —
Place: —
CONT_AWD_W912UM24F0008_9700_W912UM19D0004_9700
$4,601,201
Awarding agency: Department of Defense
Description: A-E SERVICES, PREPARATION OF DESIGN DOCUMENTS FOR CY25 ROKFC-IK, CONSOLIDATED FIRE STATION & MILITARY POLICE, CAMP WALKER, KOREA.
Start date: Oct 13, 2023
NAICS: —
PSC: —
Place: —
CONT_AWD_W912UM23F0120_9700_W912UM19D0004_9700
$2,997,060
Awarding agency: Department of Defense
Description: CY25 WATER TREATMENT PLANT, OSAN AB
Start date: Sep 27, 2023
NAICS: —
PSC: —
Place: —
CONT_AWD_W912QR23F0411_9700_W912QR23D0047_9700
$930,212
Awarding agency: Department of Defense
Description: AE SERVICES FOR WPAFB HVAC RENOVATION
Start date: Sep 22, 2023
NAICS: —
PSC: —
Place: KY
CONT_AWD_W912UM23F0067_9700_W912UM23D0006_9700
$0
Awarding agency: Department of Defense
Description: MINIMUM GUARANTEE
Start date: Aug 10, 2023
NAICS: —
PSC: —
Place: —
CONT_AWD_W912UM22F0086_9700_W912UM19D0004_9700
$1,658,130
Awarding agency: Department of Defense
Description: FEWR HS-00561-7J, WATER TREATMENT PLANT, B-628, CAMP CARROLL, KOREA
Start date: Sep 23, 2022
NAICS: —
PSC: —
Place: —
CONT_AWD_W912PP22F0016_9700_W912PP19D0025_9700
$91,910
Awarding agency: Department of Defense
Description: URGWOM DATA MANAGEMENT
Start date: Sep 7, 2022
NAICS: —
PSC: —
Place: NM
CONT_AWD_W912UM21F0007_9700_W912UM19D0004_9700
$2,191,650
Awarding agency: Department of Defense
Description: AV170, TYPE 1 AIRCRAFT PARKING, HUMPHREYS
Start date: Feb 4, 2021
NAICS: —
PSC: —
Place: —
CONT_AWD_W912QR20F0334_9700_W912QR16D0029_9700
$2,157,400
Awarding agency: Department of Defense
Description: ENVIRONMENTAL AE IDIQ
Start date: Sep 16, 2020
NAICS: —
PSC: —
Place: IN
NAICS and PSC are not reported for these awards in USAspending.
Source: USAspending.gov. Company totals are sums of all contract obligations across the company's USAspending recipient records for each fiscal year. This page is not affiliated with or endorsed by the U.S. government.