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NAICS 221310 market
NAICS 221310

NAICS 221310 contractors: Water Supply and Irrigation Systems

31 federal prime contractors list NAICS 221310 as their primary industry. Together they received $459.2M in prime contract obligations in the latest 12 months. The largest by obligations since FY2022 is American Water Operations and Maintenance, LLC, and most are headquartered in California, New Jersey, and Texas.

All 31 contractors

Ranked by prime contract obligations since FY2022, across all their NAICS codes. Open a profile for top agencies, recent awards, and contracts ending soon.

NAICS 221310 contractors: Water Supply and Irrigation Systems
ContractorHeadquartersLatest 12 moSince FY2022
American Water Operations and Maintenance, LLCNew Jersey$116.7M$656.6M
American Water Military Services, LLCNew Jersey$53.3M$374.0M
ch2m Hill Constructors, Inc.Colorado$27.7M$206.5M
OLD North Utility Services, Inc.California$27.5M$170.3M
Oklahoma City Water Utilities TrustOklahoma$23.8M$128.0M
Fort Bliss Water Services CompanyTexas$14.3M$112.9M
American Water Enterprises, LLCNew Jersey$20.0M$102.0M
Fort Riley Utility Services, Inc.Kansas$14.5M$97.9M
Emerald Coast Utility Services IncFlorida$20.5M$93.5M
Washington Suburban Sanitary CommissionMaryland$19.5M$86.5M
Augusta-Richmond County GovernmentGeorgia$11.0M$70.5M
Base Utilities IncNorth Dakota$14.5M$68.3M
Ahtna USA-CDM JVCalifornia$2.7M$53.7M
Hardin County Water District NO. 1Kentucky$5.3M$46.2M
Central Coast Water AuthorityCalifornia$9.7M$38.0M
Terrapin Utility Services, Inc.Maryland$7.1M$37.4M
Florida Governmental Utility AuthorityFlorida$6.7M$37.3M
Riverbend Water Resources DistrictTexas$5.0M$36.0M
Palmetto State Utility Services, Inc.California$5.2M$34.8M
Evoqua Water Technologies LLCPennsylvania$7.6M$34.6M
Pural Water Specialty Co. , Inc.Hawaii$245K$20.7M
Pyeongtaek-SI Water and Sewage Business PlaceOutside the U.S.$4.8M$19.1M
Antelope Valley East Kern Water AgencyCalifornia$3.7M$18.3M
City of Wildwood City HallFlorida$6.0M$17.6M
SES Energy Services LLCKansas$5.6M$17.2M
California Water Service CoCalifornia$3.5M$16.8M
Clear Lake City Water AuthorityTexas$9.2M$14.8M
Fayetteville Public Works CommissionNorth Carolina$3.2M$14.6M
Goldbelt Global LLCVirginia$5.6M$12.7M
Jungbu Water Supply OfficeOutside the U.S.$2.3M$10.7M
Northeast Ohio Regional Sewer DistrictOhio$2.3M$10.5M

Prime contract obligations from USAspending.gov through Oct 5, 2026. A contractor's primary NAICS is the code with the most obligations since FY2022. For the largest contractors in this NAICS by obligations under it, see the NAICS 221310 market page. To search by name, UEI, or CAGE code, use the contractor directory.

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