PSC Z1ND: Maintenance of Sewage and Waste Facilities
Z1ND is the product and service code (PSC) federal agencies use for “Maintenance of Sewage and Waste Facilities”, in the “Maint, Alter, Repair Buildings” group. Here are the contracts open under it now, the NAICS codes it pairs with, and who buys and wins this work.
- Open contracts now
- 3
- Federal contract spending, FY2025
- $29.6 million
- Share of contract dollars to small businesses, since FY2024
- 69%
Open count as of Oct 13, 2026, 11:57 PM ET.
Open PSC Z1ND contracts with 2+ days to respond
- Septic Tanks Pumping Service - Hannibal Locks and Dam
Due in 6 daysOct 19, 2026
- El Paso Lift Station Piping Repair
✦ The VA's Network Contracting Office 17 wants an SDVOSB contractor to tear out and replace the damaged south sewer pump line in mechanical room C106 at the El Paso VA main clinic,…
Due in 10 daysOct 23, 2026
- BPA Setup - Waste Removal and disposal from Vault toilets & Septic tanks at various sites for the Region 6 National Forest
✦ The USDA Forest Service (Pacific Northwest, Region 6) wants small businesses to set up a blanket purchase agreement for pumping out and disposing of waste from vault toilets, pit…
Open until Mar 31, 2031
Where Z1ND sits in the PSC Manual
- Category: Service
- Group Z: Maint, Repair, Alter Real Property
- Group Z1: Maint, Alter, Repair Buildings
- Code Z1ND: Maintenance of Sewage and Waste Facilities
NAICS codes used with PSC Z1ND
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with Z1ND most often:
| NAICS | Industry | Spent, last 3 years | Open notices |
|---|---|---|---|
| 236220 | Commercial and Institutional Building Construction | $17.6 million | — |
| 221320 | Sewage Treatment Facilities | $8.2 million | — |
| 237110 | Water and Sewer Line and Related Structures Construction | $7.2 million | — |
| 562991 | Septic Tank and Related Services | $6.1 million | 2 |
| 811310 | Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance | $3.4 million | — |
| 237990 | Other Heavy and Civil Engineering Construction | $3.4 million | — |
| 238220 | Plumbing, Heating, and Air-Conditioning Contractors | — | 1 |
On open notices right now, the most Z1ND work comes from Department of Agriculture (1), Department of Defense (1) and Department of Veterans Affairs (1).
Who buys under PSC Z1ND
Agencies with the most contract dollars under Z1ND over the last three fiscal years, per USAspending.gov. Each name links to that agency's open contracts and buying history:
| Agency | Obligated |
|---|---|
| Department of the Air Force | $13.2 million |
| Department of the Navy | $12.5 million |
| National Park Service | $11.8 million |
| Department of the Army | $10 million |
| International Boundary and Water Commission: U.S.-Mexico | $2.7 million |
| Forest Service | $2.3 million |
| Department of State | $1.7 million |
| Federal Prison System / Bureau of Prisons | $1.1 million |
Federal spending under PSC Z1ND by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $17.3 million |
| FY2025 | $29.6 million |
| FY2026 (incomplete) | $11.8 million |
Headline figures use FY2025, the last complete year. FY2026 is still incomplete and will rise until about early January 2027 as Defense data arrives: USAspending.gov publishes Defense contracts 90 days after they're signed.
Who wins PSC Z1ND contracts
| Company | Obligated, last 3 years |
|---|---|
| Fedvet Construction | $4.5 million |
| Mes Tokki & Engineering Co., LTD. | $3.4 million |
| North Star Construction & Engineering Inc | $3.4 million |
| Nikken Sogyo Co., LTD. | $3.3 million |
| Tatonka Trucking LLC. | $2.6 million |
| Enviremedial Services, Inc. | $2.1 million |
| Hanbaek Construction Co., LTD | $2 million |
| L & R Comm & Construction Inc | $1.9 million |
| Ironwood Commercial Builders Inc | $1.8 million |
| Optech-Monette, LLC | $1.8 million |
Linked names have a FedReady profile, which shows the NAICS codes a business is registered as small under. Most large companies have none.
Large prime contractors (companies that hold the contract with the agency) subcontract part of their work to small businesses. See which primes subcontract, by NAICS code.
Research PSC Z1ND work
By the NAICS codes this work goes with: who won recently, contracts ending soon, agencies' planned buys and the large primes that subcontract it, nationwide:
- 236220 Commercial and Institutional Building Construction: who won recently · contracts ending in the next 12 months · planned buys · large primes that subcontract
- 221320 Sewage Treatment Facilities: who won recently · planned buys · large primes that subcontract
- 237110 Water and Sewer Line and Related Structures Construction: who won recently · contracts ending in the next 12 months · planned buys · large primes that subcontract
Related PSC codes
- Z111 Maint – Rep – Alt/Office BLDGS
- Z112 Maint – Rep – Alt/Conf Space & Fac
- Z119 Maint – Rep – Alt/Other Admin BLDGS
- Z121 Maint – Rep – Alt/Air Traffic Towers
- Z122 Maint – Rep – Alt/Air Traffic TNG Fac
- Z123 Maint – Rep – Alt/Radar & Nav Fac
- Z124 Maint – Rep – Alt/Airport Runways
- Z125 Maint – Rep – Alt/Airport Terminals
- Z126 Maint – Rep – Alt/Missile Systems Fac
- Z127 Maint – Rep – Alt/Elct & Comm Sys Fac
Frequently asked questions
What is PSC Z1ND?
Z1ND is the service code in the federal Product and Service Code (PSC) Manual named “Maintenance of Sewage and Waste Facilities”, under Z (Maint, Repair, Alter Real Property) and Z1 (Maint, Alter, Repair Buildings). Agencies put a PSC on every contract to record what they bought.
What is the difference between a PSC and a NAICS code?
A PSC describes what the government is buying. A NAICS code describes the industry of the business doing the work, and it sets the SBA size standard for small business set-asides. Every contract notice has both.
Which NAICS code goes with PSC Z1ND?
Most federal contract dollars under PSC Z1ND go with NAICS 236220 (Commercial and Institutional Building Construction), according to USAspending.gov. The contracting officer picks the NAICS code for each solicitation, so check the notice.
How do I find contracts that use PSC Z1ND?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 3 open notices use PSC Z1ND right now. FedReady can match new ones to your business and email you, free.