Department of the Interior NAICS 541620 contractors

Environmental Consulting Services. Contractors in this NAICS lane under Department of the Interior.

Agency: Department of the Interior

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$1,542,071,572

Visible recipients tied to Department of the Interior and NAICS 541620

Kawerak, Inc.

Nome, AK

Nome, AK | 100 awards | Top agency Department of the Interior | NAICS 541690

$52,762

Jacobs Government Services Company

Arlington, VA

Arlington, VA | 238 awards | Top agency Department of Defense | NAICS 541330

$12,398,571

Wsp USA Environment & Infrastructure Inc.

Blue Bell, PA

Blue Bell, PA | 309 awards | Top agency Department of Defense | NAICS 236220

$165,926,652

Tohono O'odham Nation

Sells, AZ

Sells, AZ | 106 awards | Top agency Department of Health and Human Services | NAICS 237310

$1,051,213

Hdr Environmental, Operations And Construction, Inc.

Englewood, CO

Englewood, CO | 109 awards | Top agency Department of Defense | NAICS 541330

$62,574,472

Yurok Tribe

Klamath, CA

Klamath, CA | 135 awards | Top agency Department of the Interior | NAICS 238910

$423,989

Pascua Yaqui Tribe

Tucson, AZ

Tucson, AZ | 186 awards | Top agency Department of Health and Human Services | NAICS 813311

$6,598

Osage Nation

Pawhuska, OK

Pawhuska, OK | 211 awards | Top agency Department of Health and Human Services | NAICS 562910

$10,331,795

Spokane Tribe Of The Spokane Reservation

Wellpinit, WA

Wellpinit, WA | 103 awards | Top agency Department of the Interior | NAICS 541620

$662,693

Wsp USA Solutions INC

Arlington, VA

Arlington, VA | 228 awards | Top agency Department of Defense | NAICS 541330

$54,311,980

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