PSC B533: Special Studies/Analysis – Water Quality
B533 is the product and service code (PSC) federal agencies use for special studies/analysis – water quality, in the special studies – not r and d 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
- 2
- Spending, FY2026
- $8.3 million
- Share to small businesses
- 78%
Open contracts with PSC B533, due soonest
- CJD National Pollutant Discharge Elimination System (NPDES) Laboratory Services - Base plus 4 Option Years
Due in 9 daysOct 19, 2026
- VANIHCS SPS Water Testing (VA-27-00000760)
✦ The VA Northern Indiana Healthcare System (via Network Contracting Office 10) plans to buy water testing for its Sterile Processing Service under the ANSI/AAMI ST108:2023 standard.
Due in 25 daysNov 4, 2026
Where B533 sits in the PSC Manual
- Category: Service
- Group B: Special Studies/Analysis, Not R&D
- Group B5: Special Studies – Not R and D
- Code B533: Special Studies/Analysis – Water Quality
NAICS codes used with PSC B533
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with B533 most often:
| NAICS | Industry | Spent, last 3 years |
|---|---|---|
| 541380 | Testing Laboratories and Services | $13.1 million |
| 541620 | Environmental Consulting Services | $8.8 million |
| 541690 | Other Scientific and Technical Consulting Services | $2.7 million |
| 541990 | All Other Professional, Scientific, and Technical Services | $1.2 million |
| 561210 | Facilities Support Services | $1.2 million |
| 221310 | Water Supply and Irrigation Systems | $1 million |
Who buys under PSC B533
Agencies with the most contract dollars under B533 over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Department of Veterans Affairs | $9 million |
| U.S. Geological Survey | $3.3 million |
| Department of the Army | $2.8 million |
| National Park Service | $2.1 million |
| Department of the Air Force | $1.6 million |
| Bureau of Land Management | $1.4 million |
| Forest Service | $1.3 million |
| Bureau of Reclamation | $1.2 million |
On open notices right now, the most B533 work comes from Dept of Defense and Department of Veterans Affairs.
Federal spending under PSC B533 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $12.5 million |
| FY2025 | $10.6 million |
| FY2026 | $8.3 million |
| FY2027 (so far) | $84,262 |
Who wins PSC B533 contracts
| Company | Obligated, last 3 years |
|---|---|
| Mabbett & Associates, Inc. | $2.5 million |
| Phigenics LLC | $2.3 million |
| Sanco Laboratories Inc | $1.9 million |
| Rti Laboratories Inc | $1.8 million |
| Native Strategies, LLC | $1 million |
| Fluid Solutions LLC | $884,195 |
| Utah State University | $704,485 |
| The Cadmus Group LLC | $699,605 |
| Winergy LLC | $675,293 |
| Pace Analytical Services, LLC | $626,260 |
Related PSC codes
- B502 Special Studies/Analysis – Air Quality
- B503 Special Studies/Analysis – Archeological/Paleontological
- B504 Special Studies/Analysis – Chemical/Biological
- B505 Special Studies/Analysis – Cost Benefit
- B506 Special Studies/Analysis – Data (Other Than Scientific)
- B507 Special Studies/Analysis – Economic
- B509 Special Studies/Analysis – Endangered Species: Plant/Animal
- B510 Special Studies/Analysis – Environmental Assessments
- B513 Special Studies/Analysis – Feasibility (Non – Construction)
- B516 Special Studies/Analysis – Animal/Fisheries
Frequently asked questions
What is PSC B533?
B533 is the service code in the federal Product and Service Code (PSC) Manual for special studies/analysis – water quality, under B (Special Studies/Analysis, Not R&D) and B5 (Special Studies – Not R and D). 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 B533?
Most federal contract dollars under PSC B533 go with NAICS 541380 (Testing Laboratories and Services), 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 B533?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 2 open notices use PSC B533 right now. FedReady can match new ones to your business and email you, free.