Federal contractor · public award history

TETRA TECH, INC.

UEIX38LAAB5HB64CAGE1P0H7FAIRFAX, VIRGINIA

Parent: TETRA TECH, INC. LMRMKLLL3LG5

Awards we know about
40
Typical size
$278,155
Middle of their public awards
Dollars on those awards
$23.85M

Most of their awards we can see fall roughly between $154,501 and $572,722.

From official USAspending contract records — not a capability rating, past-performance score, or recommendation to team or bid.

Awarding agencies

  • Environmental Protection Agency (40)

Industries & product codes

Award history

  • Environmental Protection Agency$208,422
    Sep 9, 2025PIID 68HERC23F0082NAICS 541715PSC AJ11AWARDUSAspending ↗

    THIS TASK ORDER INCLUDES THE FOLLOWING FIVE TASK AREAS: 1. ESTABLISH COMMUNICATION WITH THE TOCOR; DEVELOP A QAPP 2. WEIGHT OF EVIDENCE 3. STRESSOR IDENTIFICATION 4. DIATOM TAXONOMY HARMONIZATION 5. RESEARCH, ASSESSMENT, AND ASSISTANCE ACTIVITIE

  • Environmental Protection Agency$67,650
    Sep 9, 2025PIID 68HERC24F0072NAICS 541715PSC AJ11AWARDUSAspending ↗

    THE PURPOSE OF THIS PR IS TO AWARD A NEW ORDER FOR DRINKING WATER SYSTEM OPERATION INFORMATION UNDER CONTRACT 68HERC22D0026 THE REQUIRED DOCUMENTS ARE: A. INDEPENDENT GOVERNMENT ESTIMATE (IGE) B. SOW OR PWS (SERVICES) OR SPECIFICATIONS (PRODUC

  • Environmental Protection Agency$458,963
    Aug 28, 2025PIID 68HERC21F0042NAICS 541620PSC B516AWARDUSAspending ↗

    TECHNICAL SUPPORT FOR MODELING EDUCATION

  • Environmental Protection Agency$221,965
    Aug 20, 2025PIID 68HERC23F0271NAICS 541715PSC AJ11AWARDUSAspending ↗

    THE PURPOSE OF THIS TO IS TO SOURCE TRACK PLASTICS TO UNDERSTAND THE MAJOR CONVEYANCES AND COMPOSITIONS OF PLASTICS ENTERING THE WATERSHED. THESE SPECIFIC MEASURES WILL SUPPORT FULLY DEVELOPED ECOLOGICAL RISK ASSESSMENTS AND BETTER TARGET POTENTIAL M

  • Environmental Protection Agency$69,556
    Aug 18, 2025PIID 68HERC22F0415NAICS 541620PSC B516AWARDUSAspending ↗

    CONTRACT-68HERC20D0016, TO 68HERC22F0415 PROJECT-SUPPORT FOR FURTHER DEVELOPMENT OF THE NATIONAL WATER CHEMISTRY DATABASE AND DEVELOPMENT OF GIS MAP APPLICATIONS.

  • Environmental Protection Agency$338,470
    Aug 18, 2025PIID 68HERC20F0242NAICS 541620PSC B516AWARDUSAspending ↗

    THE PURPOSE OF THIS TO IS TO PROVIDE SUPPORT TO EPA FOR ACTIVITIES RELATED TO EPA FRESHWATER FISH CONTAMINATION STUDIES.

  • Environmental Protection Agency$108,541
    Aug 12, 2025PIID 68HERC23F0263NAICS 541620PSC B516AWARDUSAspending ↗

    THE PURPOSE OF THIS TASK ORDER IS TO OBTAIN SERVICES TO SUPPORT A 3-DAY CWA TRIBAL FORUM ON CWA PROGRAMS AND ISSUES FOR TRIBES, TARGETED TOWARD THE IMPLEMENTATION OF CWA PROGRAMS IN INDIAN COUNTRY.

  • Environmental Protection Agency$307,438
    Aug 12, 2025PIID 68HERC24F0115NAICS 541620PSC B516AWARDUSAspending ↗

    CONTRACT 68HERC20D0016 - TASK ORDER TECHNICAL SUPPORT FOR MODELING EDUCATION.

  • Environmental Protection Agency$43,962
    Aug 7, 2025PIID 68HERC24F0281NAICS 541715PSC AJ11AWARDUSAspending ↗

    NEW TASK ORDER ON CONTRACT 68HERC22D0026 FOR FRESHWATER EXPLORER DATA LAYERS. IN PARTICULAR, PFAS DATA LAYERS WILL BE CURATED, COMBINED, AND MADE ACCESSIBLE THROUGH THE FRESHWATER EXPLORER INCLUDING EXAMPLES TO ILLUSTRATE POTENTIAL APPLICATIONS. SEE

  • Environmental Protection Agency$143,588
    Jul 29, 2025PIID 68HERC23F0449NAICS 541620PSC B516AWARDUSAspending ↗

    SUPPORT FOR FURTHER DEVELOPMENT OF THE METALS AQUATIC LIFE CRITERIA AND CHEMISTRY MAP (METALICC-MAP)

  • Environmental Protection Agency$186,011
    Jul 24, 2025PIID 68HERC25F0030NAICS 541620PSC B516AWARDUSAspending ↗

    TASK ORDER AWARD - AUTOMATED DATA ANALYSIS AND ASSESSMENT METHODOLOGY TOOL FOR MT / WY AND REGION 8 TRIBES.

  • Environmental Protection Agency$20.08M
    Jul 24, 2025PIID EPC14016NAICS 541620PSC B516AWARDUSAspending ↗

    IGF::CL::IGF TECHNICAL SUPPORT FOR ASSESSING, MANAGING, AND COMMUNICATING THE ECOLOGICAL AND HUMAN HEALTH RISKS OF CONTAMINANTS IN WATER, FISH AND SEDIMENTS OF MICROBIAL PATHOGENS IN SURFACE WATERS

  • Environmental Protection Agency$155,000
    Jul 24, 2025PIID 68HERC25F0053NAICS 541715PSC AJ11AWARDUSAspending ↗

    NEW TASK ORDER UNDER CONTRACT 68HERC22D0026 TO BE PERFORMED ACCORDING TO THE ATTACHED PERFORMANCE WORK STATEMENT (PWS) TITLED, "PFAS SPATIAL AND RISK ANALYSES"

  • Environmental Protection Agency$300,625
    Jul 23, 2025PIID 68HERC22F0239NAICS 541620PSC B516AWARDUSAspending ↗

    CONTRACT 68HHERC20D0016, TASK ORDER 68HERC22F0239 PROJECT: SUPPORT FOR NATIONAL LAKES ASSESSMENT FISH SAMPLE COLLECTION. THE PURPOSE OF THIS TASK ORDER IS TO PROVIDE SUPPORT FOR THE FOLLOWING 2022 NATIONAL LAKES ASSESSMENT (NLA) FISH TISSUE STUDY AC

  • Environmental Protection Agency$1.03M
    Jul 23, 2025PIID 68HERC21F0348NAICS 541620PSC B516AWARDUSAspending ↗

    SUPPORT FOR FISH STUDY DATA ANALYSIS AND REPORTING, DEVELOPMENT AND DELIVERY OF PRESENTATIONS, AND GENERAL TECHNICAL TASKS

  • Environmental Protection Agency$1.20M
    Jul 22, 2025PIID 68HERC21F0292NAICS 541620PSC B516AWARDUSAspending ↗

    NEW TASK ORDER UNDER CONTRACT-68HERC20D0016, CONTRACTOR TETRA TECH, PROJECT-FEDERAL WQS AND RULEMAKING SUPPORT. THE CONTRACTOR SHALL SUPPORT EPA RULEMAKINGS PERTAINING TO WATER QUALITY STANDARDS UNDER THE CLEAN WATER ACT. THE CONTRACTOR SHALL SUPPOR

  • Environmental Protection Agency$808,851
    Jul 21, 2025PIID 68HERC20F0410NAICS 541620PSC B516AWARDUSAspending ↗

    PROVIDE SUPPORT FOR PREPARING FILLET TISSUE SAMPLES FROM WHOLE FISH SAMPLES COLLECTED FOR HUMAN HEALTH FISH TISSUE STUDIES CONDUCTED BY OFFICE OF SCIENCE AND TECHNOLOGY.

  • Environmental Protection Agency$1.67M
    Jul 21, 2025PIID 68HERC21F0184NAICS 541620PSC B516AWARDUSAspending ↗

    TECHNICAL SUPPORT FOR EPA RULEMAKINGS, DETERMINATIONS AND OTHER WATER QUALITY STANDARDS-RELATED DECISIONS AND ACTIONS

  • Environmental Protection Agency$666,754
    Jul 21, 2025PIID 68HERC21F0186NAICS 541620PSC B516AWARDUSAspending ↗

    MAINTENANCE OF WQSITS DATA

  • Environmental Protection Agency$293,000
    Jul 15, 2025PIID 68HERC21F0187NAICS 541620PSC B516AWARDUSAspending ↗

    WATER PERMITS DIVISION (WPD) NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) WATER QUALITY (WQ) TECHNICAL SUPPORT

  • Environmental Protection Agency$164,502
    Jul 15, 2025PIID 68HERC21F0425NAICS 541620PSC B516AWARDUSAspending ↗

    WATER PERMITS DIVISION (WPD) NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) WATER QUALITY (WQ) TECHNICAL SUPPORT

  • Environmental Protection Agency$278,155
    Jul 9, 2025PIID 68HERC23F0546NAICS 541620PSC B516AWARDUSAspending ↗

    THE CONTRACTOR WILL PROVIDE EXPERT TECHNICAL SUPPORT FOR NPDES WATER QUALITY WHOLE EFFLUENT TOXICITY PROGRAM.

  • Environmental Protection Agency$154,001
    Jul 9, 2025PIID 68HERC22F0386NAICS 541620PSC B516AWARDUSAspending ↗

    NEW TASK ORDER REQUEST FOR TETRA TECH CONTRACT#68HERC20D0016, TO#68HERC22F0386, TITLE OF PROJECT: WATER PERMITS DIVISION (WPD) NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) WATER QUALITY (WQ) TECHNICAL SUPPORT. THE WATER PERMITS DIVISI

  • Environmental Protection Agency$600,872
    Jul 9, 2025PIID 68HERC25F0230NAICS 541620PSC B516AWARDUSAspending ↗

    B516 - SUPPORT FOR THE 2025 NATIONAL COASTAL CONDITION ASSESSMENT (NCCA) FILLET TISSUE STUDY SAMPLE PREPARATION.

  • Environmental Protection Agency$109,732
    Jul 2, 2025PIID 68HERC23F0422NAICS 541620PSC B516AWARDUSAspending ↗

    PHASE III: ASSESSMENT METHODOLOGY AND DATA ANALYSIS WORK FOR WYOMING AND MONTANA

  • Environmental Protection Agency$638,425
    Jun 25, 2025PIID 68HERC25F0183NAICS 541620PSC B516AWARDUSAspending ↗

    B516 - TECHNICAL SUPPORT FOR DEVELOPMENT OF HUMAN HEALTH WATER QUALITY CRITERIA

  • Environmental Protection Agency$123,812
    Jun 18, 2025PIID 68HERC25F0078NAICS 541715PSC AJ11AWARDUSAspending ↗

    NEW TASK ORDER - EXPANDING THE USE AND FUNCTIONALITY OF A CAUSAL ASSESSMENT SCREENING TOOL (CASTOOL)

  • Environmental Protection Agency
    Jun 17, 2025PIID 68HERC22D0026NAICS 541715PSC R499IDVUSAspending ↗

    TECHNICAL SUPPORT FOR EPA ORDS ECOLOGICAL AND GLOBAL CHANGE ASSESSMENT RESEARCH

  • Environmental Protection Agency$531,046
    May 29, 2025PIID 0002NAICS 541611PSC R499AWARDUSAspending ↗

    IGF::CL::IGF TECHNICAL ASSISTANCE TO EPA REGION III FOR TOXICS TMDL DEVELOPMENT IN THE ANACOSTIA RIVER

  • Environmental Protection Agency$98,805
    May 23, 2025PIID 68HERC22F0093NAICS 541611PSC R499AWARDUSAspending ↗

    ALASKA DREDGED MATERIAL EVALUATION FRAMEWORK (AKDMEF)

  • Environmental Protection Agency$267,686
    May 19, 2025PIID 68HERC25F0203NAICS 541620PSC B516AWARDUSAspending ↗

    B516 - FEDERAL WATER QUALITY STANDARDS AND RULEMAKING SUPPORT.

  • Environmental Protection Agency$208,724
    May 13, 2025PIID 68HERC24F0396NAICS 541620PSC B516AWARDUSAspending ↗

    CONTRACT 68HERC20D0016, TASK ORDER 68HERC24F0396 - TECHNICAL SUPPORT FOR EPA RULEMAKINGS, DETERMINATIONS AND OTHER WATER QUALITY STANDARDS (WQS) RELATED DECISIONS AND ACTIONS.

  • Environmental Protection Agency$235,852
    May 13, 2025PIID 68HERC24F0390NAICS 541620PSC B516AWARDUSAspending ↗

    CONTRACT 68HERC20D0016, TASK ORDER 68HERC24F0390 FOR MAINTENANCE OF WATER QUALITY STANDARDS INFORMATION AND TRACKING SYSTEM (WQSITS) DATA IN ACCORDANCE WITH ATTACHED PWS.

  • Environmental Protection Agency$1.07M
    May 13, 2025PIID 68HERC24F0315NAICS 541620PSC B516AWARDUSAspending ↗

    CONTRACT 68HERC20D0016, TO 68HERC24F0315- 2025 NCCA PLANNING, SAMPLE COLLECTION, REPORTING RESULTS OF COMPLETED STUDIES

  • Environmental Protection Agency$544,573
    May 12, 2025PIID 68HERC24F0461NAICS 541620PSC B516AWARDUSAspending ↗

    CONTRACT 68HERC20D0016, TASK ORDER 68HERC24F0461 - FEDERAL WATER QUALITY STANDARDS (WQS) AND RULEMAKING SUPPORT.

  • Environmental Protection Agency$2.40M
    May 7, 2025PIID 0001NAICS 541611PSC R499AWARDUSAspending ↗

    IGF::CL::IGF GENERAL TMDL SUPPORT FOR ALASKA, IDAHO, OREGON AND WASHINGTON WATERS

  • Environmental Protection Agency$486,888
    May 6, 2025PIID 68HERC19F0004NAICS 541611PSC R499AWARDUSAspending ↗

    TECHNICAL SUPPORT FOR TMDL - PHASE II OF THE APPLICATION OF TECHNICAL APPROACH FOR ESTABLISHING NITROGEN ENDPOINTS AND ALLOWABLE LOADS FOR THREE LIS WATERSHED GROUPINGS IN ACCORDANCE WITH ATTACHED PWS

  • Environmental Protection Agency$131,788
    May 5, 2025PIID 68HERC25F0224NAICS 541715PSC AH12AWARDUSAspending ↗

    AH12 - TASK ORDER - NCCA: EXTERNAL BENTHIC QA

  • Environmental Protection Agency$440,216
    May 1, 2025PIID 68HERC23F0225NAICS 541715PSC AJ11AWARDUSAspending ↗

    THE WORK DESCRIBED IN THIS TASK ORDER (TO) SUPPORTS THE ENVIRONMENTAL PROTECTION AGENCY (EPA) OFFICE OF RESEARCH AND DEVELOPMENT, CENTER FOR PUBLIC HEALTH & ENVIRONMENTAL ASSESSMENT, HEALTH AND ENVIRONMENTAL EFFECTS ASSESSMENT DIVISION (HEEAD).

  • Environmental Protection Agency$196,042
    Apr 23, 2025PIID 68HERC25F0211NAICS 541715PSC AH12AWARDUSAspending ↗

    AH12 - TECHNICAL SUPPORT FOR DISTRICT OF COLUMBIA BACTERIA TMDL MODELING AND DEVELOPMENT

Intelligence only — not legal advice, not a past-performance evaluation, and not a recommendation to team or bid. Verify on USAspending and SAM.gov.

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Industry 541620

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