What is NAICS code 562991?

NAICS 562991 is the industry "Septic Tank and Related Services" in the North American Industry Classification System, part of the Administrative and Support and Waste Management and Remediation Services sector (56).

What is the size standard for NAICS 562991?

The SBA sets a small business size standard for each NAICS code, either average annual receipts or number of employees. Check the current value for 562991 in the SBA table of size standards on sba.gov; it changes from time to time.

NAICS Code 562991: Septic Tank and Related Services

NAICS code 562991 is the industry for septic tank and related services in the Administrative and Support and Waste Management and Remediation Services sector. Agencies tag every federal contract with a NAICS code, so this is the code to list in your SAM.gov registration and to search for bids.

Government contracts under NAICS 562991

Federal agencies obligated $296M on contracts under NAICS 562991 from FY2024 to FY2026, including $87M in FY2026. The biggest buyers were the Department of Defense, the Department of Agriculture, the Department of the Interior. The largest contractors were Major Contracting Services, Inc., Amerivet Contracting, Ronjon Rentals Inc.

See the full breakdown: government septic tank and related services contracts, who wins and who buys.

Open government bids for NAICS 562991

The newest open notices from SAM.gov. Bidding needs a free SAM.gov registration.

FCC FLORENCE QUARTERLY GREASE TRAP CLEANING
Justice, Department of · Combined Synopsis/Solicitation · NAICS 562991 · CO · Small Business Set Aside - Total
Posted Oct 30, 2026 · Responses due Nov 9, 2026
Portable Toilet Services - ZION National Park
Interior, Department of the · Solicitation · NAICS 562991
Posted Oct 30, 2026 · Responses due Dec 3, 2026
Toilet Pumping for Powers & Gold Beach Ranger District
Agriculture, Department of · Solicitation · NAICS 562991 · OR · Small Business Set Aside - Total
Posted Oct 29, 2026 · Responses due Nov 10, 2026
Chemical ToiletsClosing soon
Dept of Defense · Sources Sought · NAICS 562991 · CA · No Set aside used
Posted Oct 29, 2026 · Responses due Nov 6, 2026
USSPACECOM Portable Restroom Rental and Maintenance
Dept of Defense · Combined Synopsis/Solicitation · NAICS 562991 · CO · Small Business Set Aside - Total
Posted Oct 29, 2026 · Responses due Nov 10, 2026

See all 5 open bids under NAICS 562991

Small business size standard for NAICS 562991

To bid on small business set-aside contracts under NAICS 562991, your business must be small under the SBA size standard for this code, measured either by average annual receipts or by number of employees. The values are updated periodically, so check the current SBA table of size standards before you bid.

Other NAICS codes in 5629

How to choose the right NAICS code

Pick the 6-digit code that best describes what you sell. List it as your primary code in SAM.gov, and add other codes for related work. Agencies choose one NAICS code for each contract, so check the codes on past awards for the kind of work you do. Search all codes in the NAICS code lookup.

Related guides

Frequently asked questions

What is NAICS code 562991?: NAICS 562991 is the industry "Septic Tank and Related Services" in the North American Industry Classification System, part of the Administrative and Support and Waste Management and Remediation Services sector (56).
What is the size standard for NAICS 562991?: The SBA sets a small business size standard for each NAICS code, either average annual receipts or number of employees. Check the current value for 562991 in the SBA table of size standards on sba.gov; it changes from time to time.
Are there government contracts for NAICS 562991?: Yes. Federal agencies obligated $296M on contracts under NAICS 562991 from FY2024 to FY2026, and 5 notices are open right now.