Federal NAICS Codes

NAICS 221320: Sewage Treatment Facilities

Explore obligations, trends, recent awards, and incumbent contractors for NAICS 221320.

NAICS 221320 federal market metrics

Total obligations
$3.1B
Total awards
7,024 awards
Active obligations
$1.4B
Size standard
$35,000,000 receipts

What this NAICS covers

NAICS 221320 covers operation and maintenance of sewage treatment plants, wastewater treatment processes, sludge handling and disposal, process monitoring and control, and plant support services that maintain biological, chemical, and physical treatment performance.

Federal opportunities under 221320 typically involve providing continuous plant operations, operator staffing, compliance monitoring and reporting, preventive maintenance, process optimization, and turnkey operational support so agencies sustain permitted effluent quality and reliable wastewater treatment capacity.

FY2025 snapshot

Obligations
$99.6M
Awards
214
Average award
$465.3K
Change from FY2024
+6.2%

Recent awards

Search contractors

$120,000

WATERTALENT, LLC

National Park Service

PIID
140P8526P0070
PSC
S222 - HOUSEKEEPING- WASTE TREATMENT/STORAGE

$6,738

BEST SEPTIC, INC

Bureau of Land Management

PIID
140L4326P0099
PSC
Z1ND - MAINTENANCE OF SEWAGE AND WASTE FACILITIES

$25,505

BEST SEPTIC, INC

Bureau of Land Management

PIID
140L4326P0097
PSC
Z1ND - MAINTENANCE OF SEWAGE AND WASTE FACILITIES

$6,000

WATERTECH CORP

US Coast Guard

PIID
70Z02926PNEWO0104
PSC
Z1ND - MAINTENANCE OF SEWAGE AND WASTE FACILITIES

$33,460

DXP ENTERPRISES INC

Federal Prison System / Bureau of Prisons

PIID
15B61126P00000128
PSC
4510 - PLUMBING FIXTURES AND ACCESSORIES

FAQ

What work fits NAICS 221320?
  • Operate a wastewater treatment plant with certified operators, shift coverage, process control logs, permit sampling, and monthly discharge monitoring reports.
  • Provide sludge handling and disposal operations, including dewatering, hauling coordination, manifests, and documentation of disposal methods and volumes.
  • Manage treatment operations for an agency campus or facility, including influent screening, clarifiers, aeration, disinfection, effluent monitoring, and daily operating records.
  • Perform preventive maintenance and emergency response for treatment plant equipment when bundled with responsibility for ongoing plant operations and compliance.
When is NAICS 221320 a weak fit?
  • Design-build or major construction of new treatment capacity where the primary deliverable is a constructed facility rather than ongoing wastewater treatment operations.
  • Chemical or equipment supply-only procurements that provide consumables or replacement equipment without responsibility for operating the treatment facility.
  • On-site septic system installation for individual homes where centralized treatment plant design, large-scale process equipment, and sludge management are absent.
What solicitation language points to NAICS 221320?
  • Scope requires certified wastewater operators, daily plant coverage, process control logs, and responsibility for operating named treatment processes.
  • Performance requirements cite numeric effluent limits for BOD, TSS, nutrients, or regulatory permit sampling and reporting.
  • Deliverables include operating logs, laboratory results, sludge manifests, discharge monitoring reports, and corrective action documentation for permit compliance.

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