Skip to main contentPsst! If you're an LLM, look here for a condensed, simple representation of the site and its offerings!

LiveFree Webinar — Wednesday, October 14 at 2:00 PM ET

Register Free →
← Back to NAICS Codes
NAICS Code· 562991

NAICS 562991: Septic Tank and Related Services

This U.S. industry comprises establishments primarily engaged in (1) pumping (i.e., cleaning) septic tanks and cesspools and/or (2) renting and/or servicing portable toilets. Cross-References. Establishments primarily engaged in--Show more

NAICS 562991 – Septic Tank and Related Services encompasses the installation, maintenance, pumping, inspection, repair, and disposal of on-site wastewater systems, including septic tanks, drainfields, leach lines, and associated components such as grease traps and pump stations. This sector supports critical sanitation infrastructure for federal installations lacking centralized sewer access, particularly in remote, rural, or temporary operational environments.

107
Active Contracts
$73.2M
Total Obligations (12mo)
1.3K
Awarded Contracts (12mo)
420
Contractors Awarded (12mo)
2
Median Bidders per Award
-29.9%
YoY Growth

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 562991.

AI Industry Description

NAICS 562991 – Septic Tank and Related Services encompasses the installation, maintenance, pumping, inspection, repair, and disposal of on-site wastewater systems, including septic tanks, drainfields, leach lines, and associated components such as grease traps and pump stations. This sector supports...

NAICS 562991 – Septic Tank and Related Services encompasses the installation, maintenance, pumping, inspection, repair, and disposal of on-site wastewater systems, including septic tanks, drainfields, leach lines, and associated components such as grease traps and pump stations. This sector supports critical sanitation infrastructure for federal installations lacking centralized sewer access, particularly in remote, rural, or temporary operational environments. Services under this code are essential for compliance with environmental regulations, public health standards, and facility operational continuity across DoD bases, VA medical campuses, and USDA or DOI field sites. The work often requires specialized permits, soil testing, hydraulic modeling, and adherence to EPA and state-specific wastewater codes, making technical expertise and regulatory compliance central to contract performance. Top contractors in this sector include ROCKWELL AMERICAN SERVICES, LTD., SUNTIFF, LLC, BPM SERVICES INC, MST MARITIME MANAGEMENT LLC, and STORM SERVICES, LLC. These firms range from small businesses with niche environmental remediation capabilities to mid-sized primes with nationwide service networks. Many specialize in mobile pumping units, automated monitoring systems, and rapid-response maintenance contracts, serving both permanent installations and expeditionary operations. Key government buyers include the Department of Defense, particularly through Naval Air Warfare Center and Naval Special Warfare Command, as well as the Department of Homeland Security, Department of the Interior, Department of Agriculture, Department of State, and Department of Veterans Affairs. Demand is driven by the need to maintain sanitation in isolated barracks, research outposts, border patrol stations, and veteran housing facilities where municipal infrastructure is unavailable. The competitive landscape is characterized by localized service dominance and high barriers to entry due to licensing, equipment costs, and environmental compliance requirements. Opportunities are concentrated in regions with high concentrations of federal installations and limited sewer access, particularly in the Southeast, Alaska, and rural Western states. Contractors with proven experience in federal environmental permitting and rapid deployment logistics are best positioned to compete.

Small Business Size Standard

The SBA threshold that decides who can bid NAICS 562991 work as a small business.

$9.0M
Applies to the whole industry code

The SBA cap for this NAICS (13 CFR 121.201). A business at or under it can self-certify as small for work in this code, which is what makes it eligible for a small-business set-aside. The cap is set per NAICS, so the same company can be small in one code and not in another.

13 CFR 121.201, effective January 1, 2026. The SBA revises the table roughly once a year.

Top Contractors

Companies with the highest total award value under NAICS 562991, ranked by dollars won.

Top Agencies

Federal agencies directing the most contract spending toward NAICS 562991.

Department Of Defense609 awards$29.9M
Department Of Agriculture442 awards$11.3M
Commanding General2 awards$10.8M
Department Of The Interior137 awards$4.4M
FA4620 92 Cons Lgc1 award$4.1M
W075 Endist San Fran2 awards$2.1M
W7NG Uspfo Activity Mn Arng1 award$2.0M
FA8125 Afsc Pzima1 award$1.3M
Navsup Flt Logistics Ctr Norfolk4 awards$1.1M
Department Of Homeland Security31 awards$1.1M

Competition

How many companies historically bid on federal awards in NAICS 562991, from bidder counts reported on USAspending.

Fewer Bidders

Median under 3 bidders per reported award. · 32,021 reported awards

Median Bidders

2

Per reported award, all-time

Single-Bid Awards

42%

Share of reported awards with one bidder

10+ Bidder Awards

3%

Share of reported awards with 10+ bidders

Reported Awards

32,021

78% of 41,191 total awards

Bidder Count Distribution by Fiscal Year

Share of reported awards in each bidder-count bracket per federal fiscal year.

How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.

Industry FamilyCompetitionMedian BiddersSingle-BidBidder MixReported Awards
562991This Code
Septic Tank and Related Services
Fewer Bidders242%
32,02178% of 41,191
56299NAICS Industry
Fewer Bidders244%
41,72079% of 52,663
5629Industry Group
Remediation and Other Waste Management Services
Fewer Bidders246%
116,70083% of 140,438
562Subsector
Fewer Bidders237%
273,67169% of 395,195
56Sector
Administrative and Support and Waste Management and Remediation Services
Fewer Bidders245%
1,121,39177% of 1,461,546

Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.

Related NAICS Codes

Industries similar to Septic Tank and Related Services, by shared sector, subsector, and industry group.

Explore contracts across multiple NAICS codes Browse all NAICS Codes

Dotted
NAICS 562991 FAQ

Frequently Asked Questions

NAICS code 562991 covers Septic Tank and Related Services. This U.S. industry comprises establishments primarily engaged in (1) pumping (i.e., cleaning) septic tanks and cesspools and/or (2) renting and/or servicing portable toilets. Cross-References. Establishments primarily engaged in--

Recently Posted in Septic Tank and Related Services

NAICS: 562991
New
International
RFP Sanitary Sewer CCTV Inspection
Solicitation # 2026-10
The District of Sechelt is soliciting proposals for a unit price contract to provide CCTV inspection, flushing, and smoke testing of selected sanitary sewer mains. The project focuses on the Watermark Lift Station and Water Resource Center catchments within the Sechelt village area. Due to the presence of fragile infrastructure up to 60 years old, the successful proponent must employ careful cleaning methods to avoid further degradation. All CCTV operators must be NASSCO certified, and work must adhere to the 2019 MMCD General Conditions and Sections 33 01 30.1 and 33 01 30.2. Key deliverables include MP4 standard video playback and high-resolution color still photographs delivered via USB flash drive or approved digital transfer, as CD-Rs are not accepted. Proponents must coordinate with District ArcGIS staff for data coding and provide a detailed project schedule from mobilization to final handover. The evaluation process will identify the most advantageous proposal based on the proponent's strength and ability to perform the services. Required qualifications include minimum insurance coverages of 5 million dollars per occurrence for Commercial General Liability, Vehicle Third Party Liability, and Errors and Omissions, with the District named as an additional insured. Proponents must also demonstrate compliance with the British Columbia Workers Compensation Act. Proposals must be submitted through the Bids and Tenders platform by November 13, 2026, utilizing the provided Form of Proposal and including a pricing proposal and a questionnaire limited to 10 pages.
District of Sechelt

POSTED

3 days ago

DEADLINE

in about 1 month
View Details
NAICS: 562991
New
International
Storm Line Cleaning and Inspection Program 2027- Phase 1
Solicitation # RFT-2026-102
The City of Grande Prairie is soliciting bids for the Storm Line Cleaning and Inspection Program 2027- Phase 1 under solicitation number RFT-2026-102. The scope of work includes the cleaning and inspection of approximately 30 kilometers of stormwater pipes and the cleaning of approximately 791 catch basins and manholes within the Swanavon, Highland Park, Patterson Place, and Southview neighborhoods. All inspection reporting must adhere to NASSCO standards, and the contractor is required to collect rim-to-invert measurements for each pipe. Work must be performed in accordance with the City of Grande Prairie Construction and Design Manuals, Aquatera Utilities Inc. Construction Manual, and Alberta Transportation Standard Specifications for Highway Construction. The contract is anticipated to be executed in November 2026 with a completion date of August 1, 2027. Bids must be submitted electronically via the bids&tenders platform by October 30, 2026, at 2:00 P.M. Mountain Time. Award will be granted to the qualified compliant bidder with the lowest total pricing, determined through a three-stage evaluation process covering mandatory submission requirements, technical requirements, and pricing qualification. Mandatory certifications include a Pipeline Assessment Certification Program certificate and proof of accreditation in a safety program recognized by Alberta Labour, Occupational Health and Safety, such as a COR or SECOR certificate. Contract administration is managed by the City of Grande Prairie Engineering Services, with payments issued via certificates from a Consulting Engineer within 10 days of receiving a compliant application and statutory declaration. The contractor is required to provide Performance and Labour and Material Payment Bonds. Governing law for the agreement is the laws of the province of Alberta and the federal laws of Canada. Bidders are cautioned that any contact with City officials outside of the designated Procurement Buyer through the bidding system may result in disqualification.
City of Grande Prairie

POSTED

4 days ago

DEADLINE

in 18 days
View Details
NAICS: 562991
New
SLED
Emergency Sewer Services Including Sewer Pump Stations (Re-bid)
Solicitation # 2027-12
The Town of Berlin, Connecticut, is soliciting proposals under RFP 2027-12 for emergency sewer services, including the maintenance and operation of sewer pump stations. The scope of work involves providing labor and equipment at hourly rates for routine and emergency tasks such as cleaning and jetting sewer mains, pumping sewage from pump stations, pulling pumps for repair or replacement, performing camera work in sewer lines, and easement clearing and brush hogging. The anticipated contract is a two-year agreement commencing around January 1, 2027, with the possibility of renewal. All work must be performed by the bidder's full-time employees, and a qualified superintendent who is a principal of the firm must be available for each job upon request. To be eligible, proposers must hold a State of Connecticut P-7 license and provide comprehensive insurance coverage, including at least 1 million dollars for general liability, professional liability, umbrella liability, automobile liability, and workers compensation. The Town will evaluate proposals based on the bidder's experience with similar Connecticut municipalities, responsiveness to requirements, references, and cost competitiveness, though the award will be based on the Town's overall best interest rather than price alone. Required submission documents include a P-7 license, a certificate of insurance, a sample billing format, a W-9, and a completed electronic pricing table. Proposals must be submitted via the Town's e-Procurement portal by October 29, 2026.
Water Control

POSTED

4 days ago

DEADLINE

in 16 days
View Details

Win Contracts in Septic Tank and Related Services

Get AI-powered intelligence on NAICS 562991 procurement

Real-time contract opportunities for NAICS 562991 (Septic Tank and Related Services)

AI-powered matching based on your business capabilities and past performance

Competitive analysis of contractors winning awards in this industry

Automated alerts when new opportunities are posted

Miguel
Hillary
Keith Deutsch
Christine

Join 750+ contractors already using CLEATUS