NAICS + PSC page

NAICS 237110 and PSC B503 contractors

Water and Sewer Line and Related Structures Construction. SPECIAL STUDIES/ANALYSIS- ARCHEOLOGICAL/PALEONTOLOGICAL. Cross-code contractor overlap.

NAICS 237110 + PSC B503

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$6,767,522

State overlap

Top recipients

Visible recipients in the NAICS 237110 and PSC B503 overlap

Confederated Tribes Of Colville Reservation

Nespelem, WA

Nespelem, WA | 230 awards | Top agency Department of the Interior | NAICS 921150

Spokane Tribe Of The Spokane Reservation

Wellpinit, WA

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