United States · Federal contract register · Supplier record

TETRA TECH, INC.

Line: Professional, program management and support (R408)Register loaded to September 2026Compiled 7 October 2026

TETRA TECH, INC. — United States · Federal contract register · Supplier record: 575 contracts, all years ($4,031,900,831 · Oct 1999 – Sep 2026); $349M since January 2024 (65 contracts · 8 agencies); 290th rank in the line (of 1,848 suppliers · 0.07%); 36 agencies never served ($3.4B on the line without TETRA TECH, INC.).

Assay record ASY-US-12HR1B50JQ · Cite as: Assay Systems, “TETRA TECH, INC. in the USAspending register”, https://assay-systems.com/register/us/tetra-tech-inc-0833/

575
contracts, all years
$4,031,900,831 · Oct 1999 – Sep 2026
$349M
since January 2024
65 contracts · 8 agencies
290th
rank in the line
of 1,848 suppliers · 0.07%
36
agencies never served
$3.4B on the line without TETRA TECH, INC.

Own record by year

2019 onward
$251M
$298M
$200M
$522M
$371M
$154M
$127M
$68.3M
20192020202120222023202420252026

Who buys from TETRA TECH, INC.

since January 2024
8agencies
$349Mpaid
63.7%top buyer
Department of Defense63.7%
$221,960,151
Environmental Protection Agency13.1%
$45,483,908
National Aeronautics and Space Administration12.8%
$44,781,300
Agency for International Development4.2%
$14,650,000
Department of Energy2.7%
$9,308,276
Department of State1.4%
$5,032,876
Department of Homeland Security1.1%
$3,867,363
Department of the Interior1.0%
$3,426,392

Before 2024 only: Department of Agriculture, Department of Commerce, Department of Veterans Affairs, General Services Administration, Millennium Challenge Corporation.

The line

since January 2024
$15.5Bline value
6,379contracts
48agencies
1,848suppliers
31.5%held by top ten

Professional, program management and support (R408)

$8.7B
$4.5B
$2.3B
202420252026Jan–Sep
290thof 1,848 suppliers
$10,424,574TETRA TECH, INC. in the line
0.07%share of the line
0.0%of $4,783,177,084 spent by Department of Defense

Agencies that buy the line and never bought from TETRA TECH, INC.

36agencies
2,427contracts
$3,408,019,025since January 2024
Department of Health and Human Services1,014 contracts
$896,738,306
Department of Justice386 contracts
$819,864,063
Department of the Treasury175 contracts
$673,842,151
Department of Transportation577 contracts
$562,339,552
Department of Housing and Urban Development48 contracts
$188,777,273
Department of Labor51 contracts
$119,516,844
Securities and Exchange Commission16 contracts
$30,562,613
National Science Foundation20 contracts
$29,442,032
Consumer Financial Protection Bureau7 contracts
$23,402,553
Department of Education15 contracts
$19,765,298
National Archives and Records Administration5 contracts
$12,111,914
Smithsonian Institution39 contracts
$9,992,097
Social Security Administration5 contracts
$4,147,295
Federal Trade Commission2 contracts
$2,690,295
National Endowment for the Arts2 contracts
$2,455,000
Consumer Product Safety Commission4 contracts
$2,448,275
U.S. International Development Finance Corporation5 contracts
$1,810,751
Government Accountability Office4 contracts
$1,691,832
Pension Benefit Guaranty Corporation2 contracts
$1,040,914
District of Columbia Courts7 contracts
$924,131
Peace Corps13 contracts
$828,841
Commodity Futures Trading Commission3 contracts
$695,678
Committee for Purchase from People Who Are Blind or Severely Disabled2 contracts
$535,196
U.S. Agency for Global Media3 contracts
$401,065
National Gallery of Art3 contracts
$378,360
National Labor Relations Board2 contracts
$340,784
Nuclear Regulatory Commission2 contracts
$327,458
Selective Service System2 contracts
$297,181
Institute of Museum and Library Services2 contracts
$239,337
Equal Employment Opportunity Commission2 contracts
$207,451
National Transportation Safety Board2 contracts
$88,510
Federal Election Commission1 contract
$82,671
Court Services and Offender Supervision Agency1 contract
$12,490
National Endowment for the Humanities1 contract
$8,596
International Trade Commission2 contracts
$7,549
Merit Systems Protection Board2 contracts
$4,670

How the line is bought

by value, since 2024
24%no competition
11%one applicant
0of these to TETRA TECH, INC.
Competed, several suppliers applied3,828 contracts
$10,062,450,123 · 64.9%
Awarded directly, no competition1,617 contracts
$3,732,167,224 · 24.1%
Competed, one supplier applied934 contracts
$1,714,500,854 · 11.1%

Contracts reaching their end dates

Oct 2026 – October 2027
2,117contracts
$6,302,670,195end by October 2027
346end in September 2027 · $997M
779in agencies never served · $1.5B
$247M
$252M
$649M
$483M
$664M
$823M
$554M
$508M
$571M
$283M
$262M
$997M
$9.4M
Oct 26110 contractsNov 2683 contractsDec 26159 contractsJan 27118 contractsFeb 27155 contractsMar 27300 contractsApr 27174 contractsMay 27176 contractsJun 27194 contractsJul 27152 contractsAug 27145 contractsSep 27346 contractsOct 275 contracts

Suppliers next to it in the line

since January 2024
TETRA TECH, INC.
$10,424,574
GOVERNMENT SOLUTIONS GROUP, LLC2 contracts · 2 agencies
$10,405,459
PEERS AND PARTNERS, INC.2 contracts · 1 agency
$10,390,981
CLOUDBURST CONSULTING GROUP, INC.1 contract · 1 agency
$10,369,847

All 1,848 suppliers in the line

The extract

Every buying office, every contract holder, value, number and end date behind the figures above.

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Source: USAspending.gov, U.S. Department of the Treasury, Bureau of the Fiscal Service, usaspending.gov, accessed 30 September 2026.The data is available to copy, adapt, redistribute, or otherwise use for non-commercial or for commercial purposes (USAspending.gov, Licensing); no Dun & Bradstreet data is shown.