United States · Federal contract register · Supplier record

TETRA TECH, INC.

Line: Regulatory (B528)Register loaded to September 2026Compiled 7 October 2026

TETRA TECH, INC. — United States · Federal contract register · Supplier record: 767 contracts, all years ($326,836,201 · Mar 2000 – Sep 2026); $5.4M since January 2024 (28 contracts · 2 agencies); — rank in the line (of 18 suppliers · 0.0%); 4 agencies never served ($3.7M on the line without TETRA TECH, INC.).

Assay record ASY-US-0ZAESNJ1G2 · Cite as: Assay Systems, “TETRA TECH, INC. in the USAspending register”, https://assay-systems.com/register/us/tetra-tech-inc-13ec/

767
contracts, all years
$326,836,201 · Mar 2000 – Sep 2026
$5.4M
since January 2024
28 contracts · 2 agencies
—
rank in the line
of 18 suppliers · 0.0%
4
agencies never served
$3.7M on the line without TETRA TECH, INC.

Own record by year

2019 onward
$12.9M
$9.8M
$12.1M
$3.2M
$5.1M
$2.1M
$1.8M
$1.5M
20192020202120222023202420252026

Who buys from TETRA TECH, INC.

since January 2024
2agencies
$5.4Mpaid
99.7%top buyer
Environmental Protection Agency99.7%
$5,375,690
Department of the Interior0.3%
$15,433

Before 2024 only: Department of Agriculture, Department of Commerce, Department of Defense, Department of Health and Human Services.

The line

since January 2024
$40.8Mline value
45contracts
9agencies
18suppliers
97.9%held by top ten

Regulatory (B528)

$3.9M
$12.8M
$24.1M
202420252026Jan–Sep
—of 18 suppliers
$0TETRA TECH, INC. in the line
0.0%share of the line

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

4agencies
11contracts
$3,713,869since January 2024
Department of Homeland Security8 contracts
$2,584,944
Nuclear Regulatory Commission1 contract
$547,625
Department of Labor1 contract
$544,874
Department of Veterans Affairs1 contract
$36,427

How the line is bought

by value, since 2024
23%no competition
56%one applicant
0of these to TETRA TECH, INC.
Competed, one supplier applied5 contracts
$22,873,173 · 56.0%
Awarded directly, no competition15 contracts
$9,438,161 · 23.1%
Competed, several suppliers applied25 contracts
$8,514,834 · 20.9%

Contracts reaching their end dates

Oct 2026 – October 2027
16contracts
$29,544,885end by October 2027
7end in September 2027 · $23.7M
2in agencies never served · $2.1M
$1.8M
$500K
$901K
$336K
$280K
$545K
$35.0K
$1.5M
$23.7M
Nov 261 contractDec 261 contractFeb 271 contractMar 271 contractApr 271 contractMay 271 contractJun 271 contractAug 272 contractsSep 277 contracts

Fastest-growing supplier in the line

same line
+44%growth

Supplier UEI CKV2L9GZKJK3

2024 to date
$27,192,965
2022–2023
$18,948,575

The extract

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

Request extractSee a sample extract

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.