PSC Z1KB: Maintenance of Canals
Z1KB is the product and service code (PSC) federal agencies use for maintenance of canals, 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
- Spending, FY2026
- $227.1 million
Open contracts with PSC Z1KB, due soonest
- GIWW Freeport to Matagorda Maintenance Dredging
Due in 8 daysOct 19, 2026
- Gulf Intracoastal Waterway High Island to Causeway with Channel to Port Bolivar Maintenance Dredging
Due in 18 daysOct 29, 2026
- FY26 HOUSTON SHIP CHANNEL, TEXAS BAYPORT FLARE HOPPER DREDGING
Due in 22 daysNov 2, 2026
Where Z1KB sits in the PSC Manual
- Category: Service
- Group Z: Maint, Repair, Alter Real Property
- Group Z1: Maint, Alter, Repair Buildings
- Code Z1KB: Maintenance of Canals
NAICS codes used with PSC Z1KB
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with Z1KB most often:
| NAICS | Industry | Spent, last 3 years |
|---|---|---|
| 237990 | Other Heavy and Civil Engineering Construction | $728.8 million |
| 236220 | Commercial and Institutional Building Construction | $5.2 million |
| 238110 | Poured Concrete Foundation and Structure Contractors | $729,000 |
| 237310 | Highway, Street, and Bridge Construction | $437,481 |
| 238910 | Site Preparation Contractors | $375,595 |
| 561730 | Landscaping Services | $352,205 |
Federal spending under PSC Z1KB by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $356.3 million |
| FY2025 | $152.9 million |
| FY2026 | $227.1 million |
| FY2027 (so far) | $0 |
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 Z1KB?
Z1KB is the service code in the federal Product and Service Code (PSC) Manual for maintenance of canals, 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 Z1KB?
Most federal contract dollars under PSC Z1KB go with NAICS 237990 (Other Heavy and Civil Engineering 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 Z1KB?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 3 open notices use PSC Z1KB right now. FedReady can match new ones to your business and email you, free.