PSC Z1PD: Maintenance of Waste Treatment and Storage Facilities
Service code
Code facts
- Spend category
- Facilities & Construction Facility Related Services
- Part of
-
-
Z
- Z1
-
Z
- Contract awards
- 9 In the last 12 months
- Contract obligations
- $573,137,532 In FY2025
PSC codes and definitions come from the GSA PSC Manual and contract spending from SAM.gov/FPDS.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | -$1,220 |
| FY2026 | $574,973,472 |
| FY2025 | $573,137,532 |
| FY2024 | $544,025,500 |
| FY2023 | $615,859,160 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Central Plateau Cleanup Company, LLC | $571,101,172 | |
| 2 | V. Lopez JR. & Sons General Engineering Contractors, Inc. | $2,083,016 | |
| 3 | Perc Water Corporation | $494,332 | |
| 4 | Okinawa Sobi Kogyo, K.K. | $299,325 | |
| 5 | City Of Alexandria Virginia Sanitation Authority | $257,933 | |
| 6 | Kgjj Engineering Solutions, LLC | $208,827 | |
| 7 | Broadview Waste Solutions, Inc. | $127,128 | |
| 8 | Fisher Bioservices Inc. | $116,733 | |
| 9 | Lissi Gebhardt Spezialtransporte-Umweltschutz GMBH | $90,298 | |
| 10 | Kobakyu, K.K. | $65,735 |
See the full FY2025 ranking of PSC Z1PD contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Energy | $570,117,485 | |
| 2 | Department of the Interior | $2,080,416 | |
| 3 | Department of the Navy | $1,720,994 | |
| 4 | Defense Logistics Agency | $299,325 | |
| 5 | Washington Headquarters Service | $257,933 | |
| 6 | Department of Health and Human Services | $243,860 | |
| 7 | Department of the Army | $177,220 | |
| 8 | Department of Agriculture | $49,016 | |
| 9 | Air Force | $21,733 | |
| 10 | Department of Justice | $3,960 |
Top NAICS codes by obligations
| Rank | NAICS code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 562910 Remediation Services | $571,101,172 | |
| 2 | 236220 Commercial and Institutional Building Construction | $2,070,024 | |
| 3 | 221320 Sewage Treatment Facilities | $801,281 | |
| 4 | 238990 All Other Specialty Trade Contractors | $299,325 | |
| 5 | 561210 Facilities Support Services | $208,827 | |
| 6 | 541380 Testing Laboratories and Services | $116,733 | |
| 7 | 562211 Hazardous Waste Treatment and Disposal | $107,640 | |
| 8 | 238290 Other Building Equipment Contractors | $90,298 | |
| 9 | 562998 All Other Miscellaneous Waste Management Services | $65,735 | |
| 10 | 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance | $47,141 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Washington | $571,101,172 | |
| 2 | California | $2,786,175 | |
| 3 | Virginia | $257,933 | |
| 4 | Maryland | $243,860 | |
| 5 | Illinois | $41,220 | |
| 6 | Pennsylvania | $36,092 | |
| 7 | Alaska | $12,924 | |
| 8 | Indiana | $7,000 | |
| 9 | New Hampshire | $3,960 | |
| 10 | Florida | $310 |
Shares are of everything obligated under PSC Z1PD in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
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Quick answers
What is PSC Z1PD?
PSC Z1PD is Maintenance of Waste Treatment and Storage Facilities, a service code in PSC Z, Maintenance, Repair, Alteration Real Property.
How much do federal agencies spend under PSC Z1PD?
Federal contracts under PSC Z1PD obligated $573,137,532 in fiscal year 2025 and $2,307,994,443 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC Z1PD?
The contractors with the most obligated under PSC Z1PD in fiscal years 2026 and 2027 are Central Plateau Cleanup Company, LLC ($571,101,172); V. Lopez JR. & Sons General Engineering Contractors, Inc. ($2,083,016); and Perc Water Corporation ($494,332).
Which agencies buy the most under PSC Z1PD?
The agencies that obligated the most under PSC Z1PD in fiscal years 2026 and 2027 are Department of Energy ($570,117,485), Department of the Interior ($2,080,416) and Department of the Navy ($1,720,994).
Which NAICS codes are used with PSC Z1PD?
The NAICS codes with the most obligated under PSC Z1PD in fiscal years 2026 and 2027 are 562910 Remediation Services, 236220 Commercial and Institutional Building Construction and 221320 Sewage Treatment Facilities.
Where is the work under PSC Z1PD performed?
By place of performance, the states with the most contract obligations under PSC Z1PD over the last 12 months are Washington ($571,101,172), California ($2,786,175) and Virginia ($257,933).
What is the latest contract opportunity under PSC Z1PD?
The latest contract opportunity under PSC Z1PD is FY26 Preventive maintenance of Wastewater Collection and Treatment System, award notice from US Embassy Libreville (DOS), posted October 5, 2026.
On GovTribe
See everything under PSC Z1PD
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
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