NAICS Code 562991: Septic Tank and Related Services
National industry
SBA small business size standard: $9 million in average annual receipts
Definition
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.
Government contracts for this service: PSC W085 Toiletries Lease and Rental
Code facts
- Part of
-
-
56
-
562
-
5629
- 56299
-
5629
-
562
-
56
- Contract awards
- 1,508 In the last 12 months
- Contract obligations
- $107,568,777 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Business activities under NAICS 562991
- Cesspool cleaning services
- Portable toilet pumping (i.e., cleaning) services
- Portable toilet renting and/or servicing
- Pumping (i.e., cleaning) cesspools and septic tanks
- Pumping (i.e., cleaning) portable toilets
- Septic tank cleaning services
- Septic tank pumping (i.e., cleaning) services
- Tank cleaning services, septic
- Toilet renting and/or servicing, portable
Looking for another activity? Search the NAICS code lookup or browse business activities from A to Z.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $1,945,831 |
| FY2026 | $85,827,672 |
| FY2025 | $107,568,777 |
| FY2024 | $100,524,530 |
| FY2023 | $85,156,746 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Major Contracting Services, Inc. | $4,456,864 | |
| 2 | Suntiff, LLC | $2,827,996 | |
| 3 | Ronjon Rentals Inc. | $2,734,430 | |
| 4 | Skookum Educational Programs | $2,615,453 | |
| 5 | Oregon Portable Toilets LLC | $2,265,189 | |
| 6 | RLA Holdings, Inc. | $2,177,743 | |
| 7 | W W Pumping Service | $2,057,391 | |
| 8 | Villain Baits Inc. | $2,047,991 | |
| 9 | K&H Environmental Services, LLC | $1,875,285 | |
| 10 | Ronjon Rentals Vantex Service Joint Venture | $1,866,147 |
See the full FY2025 ranking of NAICS 562991 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Army | $29,517,368 | |
| 2 | Department of Agriculture | $26,903,998 | |
| 3 | Air Force | $11,829,575 | |
| 4 | Department of the Navy | $8,819,528 | |
| 5 | Department of the Interior | $7,772,290 | |
| 6 | Department of Homeland Security | $940,899 | |
| 7 | Department of Justice | $577,231 | |
| 8 | Department of Veterans Affairs | $442,306 | |
| 9 | Department of Health and Human Services | $395,930 | |
| 10 | Department of State | $249,226 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | W085 Lease or Rental of Equipment: Toiletries | $36,289,210 | |
| 2 |
X1ND Lease/ |
$14,080,288 | |
| 3 | S222 Waste Treatment and Storage | $13,446,973 | |
| 4 |
S205 Trash/ |
$5,154,028 | |
| 5 | W045 Lease or Rental of Equipment: Plumbing, Heating, and Waste Disposal Equipment | $4,083,619 | |
| 6 | Z1ND Maintenance of Sewage and Waste Facilities | $2,089,782 | |
| 7 | 5410 Prefabricated and Portable Buildings | $2,073,268 | |
| 8 | W099 Lease or Rental of Equipment: Miscellaneous | $1,791,939 | |
| 9 | S299 Other Housekeeping Services | $1,722,228 | |
| 10 | 4540 Waste Disposal Equipment | $1,003,116 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | California | $12,581,569 | |
| 2 | Washington | $6,702,382 | |
| 3 | Oregon | $5,690,550 | |
| 4 | Utah | $3,638,112 | |
| 5 | Arizona | $3,571,424 | |
| 6 | Texas | $3,466,323 | |
| 7 | Colorado | $2,675,469 | |
| 8 | Montana | $2,417,239 | |
| 9 | Hawaii | $2,064,518 | |
| 10 | Puerto Rico | $1,948,544 | |
| 11 | Alaska | $1,921,109 | |
| 12 | Georgia | $1,837,844 | |
| 13 | Virginia | $1,826,045 | |
| 14 | New Mexico | $1,726,971 | |
| 15 | North Carolina | $1,661,723 | |
| 16 | South Carolina | $1,636,896 | |
| 17 | Kentucky | $1,608,001 | |
| 18 | Indiana | $1,503,555 | |
| 19 | Idaho | $1,490,470 | |
| 20 | New York | $1,169,059 | |
| 21 | Wyoming | $1,010,171 | |
| 22 | Minnesota | $984,701 | |
| 23 | Maryland | $928,000 | |
| 24 | Wisconsin | $892,469 | |
| 25 | Kansas | $755,649 | |
| 26 | Nevada | $690,315 | |
| 27 | Maine | $623,299 | |
| 28 | Guam | $598,626 | |
| 29 | New Jersey | $590,992 | |
| 30 | Florida | $556,893 | |
| 31 | Massachusetts | $556,162 | |
| 32 | Pennsylvania | $513,669 | |
| 33 | North Dakota | $453,159 | |
| 34 | Mississippi | $356,704 | |
| 35 | Alabama | $337,529 | |
| 36 | Northern Mariana Islands | $277,955 | |
| 37 | Ohio | $255,211 | |
| 38 | West Virginia | $227,178 | |
| 39 | Louisiana | $212,775 | |
| 40 | Arkansas | $212,067 | |
| 41 | Connecticut | $174,939 | |
| 42 | Nebraska | $172,544 | |
| 43 | Tennessee | $152,896 | |
| 44 | Illinois | $123,680 | |
| 45 | Oklahoma | $120,730 | |
| 46 | South Dakota | $111,379 | |
| 47 | Michigan | $98,880 | |
| 48 | Missouri | $59,200 | |
| 49 | New Hampshire | $57,420 | |
| 50 | Iowa | $48,582 | |
| 51 | U.S. Virgin Islands | $35,470 | |
| 52 | District of Columbia | $31,472 | |
| 53 | Vermont | $9,850 | |
| 54 | Rhode Island | $1,929 |
Show all 54
Shares are of everything obligated under NAICS 562991 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 40 more
Latest 50 of 5,762 listed here. See the rest on GovTribe.
Size standard history
Federal Register rules that named this code
Proposed size standard changes
| Proposed rule | Published | Comments |
|---|---|---|
| Small Business Size Standards: Monetary-Based Industry Size Standards | Closed Oct 21, 2025No final rule found |
From the NAICS codes each rule's amendments to 13 CFR 121.201 name. Rules that print their size standard tables as images aren't listed.
Quick answers
What is NAICS 562991?
NAICS 562991 is Septic Tank and Related Services, a national industry in NAICS 56, Administrative and Support and Waste Management and Remediation Services.
What is the NAICS code for cesspool cleaning services?
The NAICS code for cesspool cleaning services is 562991, Septic Tank and Related Services.
What is the NAICS code for septic tank cleaning services?
The NAICS code for septic tank cleaning services is 562991, Septic Tank and Related Services.
What is the NAICS code for portable toilet renting and/or servicing?
The NAICS code for portable toilet renting and/
When did the size standard for NAICS 562991 last change?
The most recent Federal Register rule on record that names NAICS 562991 in the SBA's size standards is "Small Business Size Standards: Adjustment of Monetary-Based Size Standards, Disadvantage Thresholds, and 8(a) Eligibility Thresholds for Inflation" (87 FR 69118), published Nov 17, 2022 and effective Dec 19, 2022.
How much do federal agencies spend under NAICS 562991?
Federal contracts under NAICS 562991 obligated $107,568,777 in fiscal year 2025 and $381,023,556 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 562991?
The contractors with the most obligated under NAICS 562991 in fiscal years 2026 and 2027 are Major Contracting Services, Inc. ($4,456,864); Suntiff, LLC ($2,827,996); and Ronjon Rentals Inc. ($2,734,430).
Which agencies buy the most under NAICS 562991?
The agencies that obligated the most under NAICS 562991 in fiscal years 2026 and 2027 are Department of the Army ($29,517,368), Department of Agriculture ($26,903,998) and Air Force ($11,829,575).
Which PSC codes are used with NAICS 562991?
The PSC codes with the most obligated under NAICS 562991 in fiscal years 2026 and 2027 are W085 Lease or Rental of Equipment: Toiletries, X1ND Lease/
Where is the work under NAICS 562991 performed?
By place of performance, the states with the most contract obligations under NAICS 562991 over the last 12 months are California ($12,581,569), Washington ($6,702,382) and Oregon ($5,690,550).
What is the latest contract opportunity under NAICS 562991?
The latest contract opportunity under NAICS 562991 is USCG Station Cape Charles Sewage Pump Out Service, solicitation, posted November 6, 2026.
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