NAICS 2371in237:Heavy and Civil Engineering Construction

Utility System Construction

450 active contract opportunities

450

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379

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Top Industries

  • Water and Sewer Line and Related Structures Construction312
  • Power and Communication Line and Related Structures Construction92
  • NAICS 237110 Water and Sewer Line and Related Structures Construction24
  • Oil and Gas Pipeline and Related Structures Construction22

Set-Aside Distribution

  • 176
  • Small Business141
  • Full & Open44
  • SDVOSB28
  • Buy Indian12

Top Locations

  • CA66
  • VA46
  • CO27
  • OK26
  • WA25

About NAICS2371

The North American Industry Classification System (NAICS) code 2371 covers utility system construction. Federal agencies use NAICS codes to classify contracts by industry. Businesses should register their applicable NAICS codes in SAM.gov.

SAM.gov Registration →|Set-Aside Programs →

Related Industries

2361:Residential Building Construct...2362:Nonresidential Building Constr...2372:Land Subdivision2373:Highway, Street, and Bridge Co...2379:Other Heavy and Civil Engineer...2381:Foundation, Structure, and Bui...

Seeking Qualified Subconsultants for Elsinore Valley Municipal Water District’s Corydon Well Replacement C2305

Small Business Administration (SBA)
CA
NAICS 237110
Posted Aug 1, 2026
Due Sep 1, 2026
Disadvantaged Business Enterprise (DBE) – Dept of Transportation

Secondary Treatment System Upgrades Project

Small Business Administration (SBA)
CA
NAICS 237110
Posted Aug 1, 2026
Due Sep 3, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

NSCS – Landscaping

Small Business Administration (SBA)
OR
NAICS 237110
Posted Aug 1, 2026
Due Aug 13, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Alaskan Native Corporation (ANC) or Indian Tribe (IT), Native Hawaiian Organization (NHO), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Sanitary Sewer & Recycled Water Project in Colusa, CA

Small Business Administration (SBA)
CA
NAICS 237110
Posted Aug 1, 2026
Due Sep 1, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

NORSD Water Resource Recovery Facility (WRRF) Expansion

Small Business Administration (SBA)
CA
NAICS 237110
Posted Aug 1, 2026
Due Sep 17, 2026
Small Business (SB), Women-Owned Small Business (WOSB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Fire Pond Supplemental Water Project

Small Business Administration (SBA)
NY
NAICS 237110
Posted Jul 31, 2026
Due Aug 15, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Alaskan Native Corporation (ANC) or Indian Tribe (IT), Native Hawaiian Organization (NHO), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Citywide Storm Water Infrastructure CIPP IDIQ FY 26-28 in Corpus Chrisi, TX

Small Business Administration (SBA)
TX
NAICS 237110
Posted Jul 30, 2026
Due Aug 11, 2026
Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Minority Business Enterprise (MBE) – NMSDC certification (non-federal)

Secondary Treatment System Upgrades Project

Small Business Administration (SBA)
CA
NAICS 237110
Posted Jul 30, 2026
Due Sep 3, 2026
Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Henrici Water Pump Station & Transmission Improvements

Small Business Administration (SBA)
OR
NAICS 237110
Posted Jul 29, 2026
Due Aug 4, 2026
Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Sanitary Sewer Improvements, Various Locations in Rockville, MD

Small Business Administration (SBA)
MD
NAICS 237110
Posted Jul 29, 2026
Due Sep 4, 2026
Women-Owned Small Business (WOSB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Buccaneer Lift Station Fixed Price Design-Build

Small Business Administration (SBA)
CA
NAICS 237110
Posted Jul 29, 2026
Due Sep 16, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Alaskan Native Corporation (ANC) or Indian Tribe (IT), Native Hawaiian Organization (NHO), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Corydon Well Replacement C2305

Small Business Administration (SBA)
CA
NAICS 237110
Posted Jul 28, 2026
Due Sep 1, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Alaskan Native Corporation (ANC) or Indian Tribe (IT), Native Hawaiian Organization (NHO), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Recovery Lines for Stockdale North Wells SN-1 & SN-2, CA

Small Business Administration (SBA)
CA
NAICS 237110
Posted Jul 28, 2026
Due Aug 26, 2026
Small Business (SB), Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Y-Glendo-Lusk Rural Tap and Quinn Creek Substation

ENERGY, DEPARTMENT OF
LOVELAND, CO
NAICS 237130
Posted Jul 27, 2026
Due Aug 14, 2026

SEWER CONSTRUCTION

Small Business Administration (SBA)
MD
NAICS 237110
Posted Jul 27, 2026
Due Aug 18, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), Alaskan Native Corporation (ANC) or Indian Tribe (IT), Native Hawaiian Organization (NHO), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Hagerstown Wastewater Treatment Plant Improvements - Phase 1

Small Business Administration (SBA)
MD
NAICS 237110
Posted Jul 27, 2026
Due Aug 17, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Alaskan Native Corporation (ANC) or Indian Tribe (IT), Native Hawaiian Organization (NHO), Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Y-Cottonwood Substation Construction, Stage 02, Phas

ENERGY, DEPARTMENT OF
FOLSOM, CA
NAICS 237130
Posted Jul 27, 2026

GAOA Blanchard Sewer Line Replacement Ozark St. Francis NF

AGRICULTURE, DEPARTMENT OF
WASHINGTON, DC
NAICS 237110
Posted Jul 27, 2026
Due Aug 25, 2026
Small Business

C-Drainage Repair - HINU

INTERIOR, DEPARTMENT OF THE
Albuquerque, NM
NAICS 237110
Posted Jul 27, 2026

CMR New Sewer Lines

STATE, DEPARTMENT OF
WASHINGTON, DC
NAICS 237110
Posted Jul 27, 2026
Due Aug 28, 2026
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