PSC codes › H346
PSC H346 — Inspection: Water Purification and Sewage Treatment Equipment: federal contracts
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What PSC H346 covers
Description: Inspection and Laboratory Services (except medical/dental): Water Purification and Sewage Treatment Equipment
Includes: Commercial Testing and Laboratory Services
Excludes: Medical and Dental Laboratory Services
Official definition: GSA PSC Manual (PSC April 2025.xlsx), acquisition.gov/psc-manual. Category: Equipment Related Services › Quality Control.
Who is winning new PSC H346 work
Contractors ranked by obligations on awards that started FY2024–FY2027 to date.
| Contractor | Obligations | Awards |
|---|---|---|
| HYPERION BIOTECHNOLOGY, INC. | $1.4M | 40 |
| ORENCO SYSTEMS, INC. | $391K | 1 |
| ENVIRONMENTAL CONSTRUCTION CORP. | $270K | 1 |
| D & D LABORATORY LLC | $197K | 5 |
| AMERICAN LADY VETS SERVICES, INC | $167K | 1 |
| KURITA AMERICA INC | $151K | 1 |
| CATALYST DIVING, INC. | $132K | 2 |
| PHIGENICS LLC | $93K | 1 |
| GROUNDWATER RESOURCES LLC | $81K | 1 |
| SCHRASS GMBH | $79K | 16 |
How competitive is PSC H346?
- 69.2% of obligations on these awards were competed.
- 50.0% of competed awards that report offers drew a single offer (n=56).
- 80.7% went to small businesses.
- The five largest contractors hold 66.1% across 38 contractors.
NAICS codes used on PSC H346 awards
| NAICS | Industry | Share |
|---|---|---|
| 541620 | Environmental Consulting Services | 39.8% |
| 237110 | Water and Sewer Line and Related Structures Construction | 10.5% |
| 541380 | Testing Laboratories and Services | 10.5% |
| 221310 | Water Supply and Irrigation Systems | 10.4% |
| 333310 | Commercial and Service Industry Machinery Manufacturing | 7.3% |
| 562998 | All Other Miscellaneous Waste Management Services | 5.0% |
| 541350 | Building Inspection Services | 3.5% |
| 541690 | Other Scientific and Technical Consulting Services | 2.5% |
Related PSC codes
J046 Maint/Repair/Rebuild of Equipment: Water Purification and Sewage Treatment Equipment · Z1NE Maintenance of Water Supply Facilities · H946 Other Qc/Test/Inspect: Water Purification and Sewage Treatment Equipment · H999 Other Quality Control, Testing and Inspection Services: Miscellaneous · F103 Water Quality Support Services · Q301 Reference Laboratory Testing · 4610 Water Purification Equipment · B533 Water Quality Studies
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