State + agency + NAICS page

Environmental Protection Agency NAICS 541330 contractors in Illinois

Engineering Services. Use this deeper state-buyer-industry page to see which visible contractors sit closest to this exact overlap in the public AwardRegistry layer.

Illinois + Environmental Protection Agency
Last updated: April 8, 2026

Visible recipients

3

Mapped obligations

$5,998,735,320

Top PSC links

4

Top recipients

Visible recipients tied to Environmental Protection Agency, Illinois, and NAICS 541330

Alion Science And Technology Corporation

Chicago, IL

Alion Science And Technology Corporation is a federal category business profile based in Chicago, IL. The current public data layer shows $1,391,195,185 in visible federal obligations across 5 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541710 (Research and Development in the Physical, Engineering, and Life Sciences). The profile also shows meaningful product and service activity in PSC AZ12.

$100,025,236

Hii Mission Technologies CORP

Willowbrook, IL

Hii Mission Technologies CORP is a federal category business profile based in Willowbrook, IL. The current public data layer shows $380,690,397 in visible federal obligations across 464 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC AZ12.

$5,892,249,412

Farnsworth Group, INC

Bloomington, IL

Farnsworth Group, INC is a federal category business profile based in Bloomington, IL. The current public data layer shows $9,309,109 in visible federal obligations across 5 awards or transactions. Small Business Administration appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC C1DB.

$6,460,672