NAICS 2371in237:Heavy and Civil Engineering Construction

Utility System Construction

450 active contract opportunities

450

Active Opportunities

379

Posted Last 7 Days

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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...

ADD / ALTER CITY WATER PUMP STATION, B980

DEPT OF DEFENSE
APO, AP
NAICS 237110
Posted Jul 21, 2026
Due Aug 6, 2026

LAKE - REPLACE HORSEPOWER COVE LIFT STATION

INTERIOR, DEPARTMENT OF THE
BOULDER CITY, NV
NAICS 237110
Posted Jul 20, 2026
Due Aug 24, 2026
Small Business

Wastewater Collection System Improvement Project

Small Business Administration (SBA)
CA
NAICS 237110
Posted Jul 20, 2026
Due Aug 6, 2026
Small Business (SB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Minority Business Enterprise (MBE) – NMSDC certification (non-federal)

Phase 1 – Water Distribution System Improvements

Small Business Administration (SBA)
MT
NAICS 237110
Posted Jul 20, 2026
Due Aug 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), 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)

Z-DEVA 318717 - Rehab Furnace&Cow Creeks W&WW System

INTERIOR, DEPARTMENT OF THE
Denver, CO
NAICS 237110
Posted Jul 20, 2026

Z-BRCA 318695 Rehabilitate Main Water System at East Creek and Yovimpa Point

INTERIOR, DEPARTMENT OF THE
Denver, CO
NAICS 237110
Posted Jul 20, 2026
Due Aug 12, 2026

Stephenson Taylor Water Line Extension

HEALTH AND HUMAN SERVICES, DEPARTMENT OF
SEATTLE, WA
NAICS 237110
Posted Jul 20, 2026
Due Aug 19, 2026
ISBEE

Y-2026 MARCOTT COULEE PIPELINE

INTERIOR, DEPARTMENT OF THE
BILLINGS, MT
NAICS 237110
Posted Jul 20, 2026
Due Aug 4, 2026
Small Business

2022 Return Capacity Improvements, CA

Small Business Administration (SBA)
CA
NAICS 237110
Posted Jul 20, 2026
Due Aug 5, 2026
Disadvantaged Business Enterprise (DBE) – Dept of Transportation

Repair Airfield Stormwater Drainage Phase II

DEPT OF DEFENSE
DOBBINS AFB, GA
NAICS 237110
Posted Jul 20, 2026
Due Aug 11, 2026
Small Business

Solar Construction on New Building

AGRICULTURE, DEPARTMENT OF
BELTSVILLE, MD
NAICS 237130
Posted Jul 20, 2026
Due Aug 7, 2026
Small Business

Wastewater Collection System Improvement Project

Small Business Administration (SBA)
CA
NAICS 237110
Posted Jul 20, 2026
Due Aug 6, 2026
Small Business (SB), 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)

Frick Unit Lateral N0 Pipeline Phase 3

Small Business Administration (SBA)
CA
NAICS 237110
Posted Jul 20, 2026
Due Aug 18, 2026
SBA-certified HUBZone Small Business (HUBZone SB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Kohrs Manning Diversion Improvement Project

Small Business Administration (SBA)
MT
NAICS 237110
Posted Jul 20, 2026
Due Aug 5, 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)

Gardiner Diversion Improvements Project

Small Business Administration (SBA)
MT
NAICS 237110
Posted Jul 20, 2026
Due Aug 5, 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)

Solicitation N4008426Q7502DBB UFC Repair Aboveground Fuel Storage, ABAB, Palawan, Philippines

DEPT OF DEFENSE
FPO, AP
NAICS 237120
Posted Jul 20, 2026
Due Aug 18, 2026

Y-CAPE COD NS - NELLIE ROAD COMBINED SEPTIC SYSTEM

INTERIOR, DEPARTMENT OF THE
BOSTON, MA
NAICS 237110
Posted Jul 18, 2026

Y-GLBA REHAB WATERLINE

INTERIOR, DEPARTMENT OF THE
ANCHORAGE, AK
NAICS 237110
Posted Jul 17, 2026
Due Aug 6, 2026
Small Business

Z-OLYM Rehabilitate Log Cabin Drainfield

INTERIOR, DEPARTMENT OF THE
PORT ANGELES, WA
NAICS 237110
Posted Jul 17, 2026

Nambe Wastewater Treatment Improvements Lagoon #4 Nambe

HEALTH AND HUMAN SERVICES, DEPARTMENT OF
SEATTLE, WA
NAICS 237110
Posted Jul 17, 2026
Due Aug 5, 2026
Small Business
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