Key takeaways
- NAICS 541620 covers advice on environmental issues such as contamination, hazardous materials and compliance.
- The SBA size standard is $19.0M in average annual receipts. An August 2026 SBA proposal would change it to $295M (all of 5416); that proposal is not in effect.
NAICS 541620 at a glance
| Fact | 541620 |
|---|---|
| NAICS code | 541620 |
| Title | Environmental Consulting Services |
| SBA size standard | $19.0M receipts |
| Proposed standard (Aug. 2026) | $295M (all of 5416) (not in effect) |
Sources: U.S. Census Bureau NAICS manual; SBA Table of Small Business Size Standards, 13 CFR 121.201. Confirm any size determination with the SBA size tool.
What NAICS 541620 covers
This industry comprises businesses primarily engaged in advice on environmental issues such as contamination, hazardous materials and compliance.
Related codes: 541611 Administrative Management and General Management Consulting Services, 541614 Process, Physical Distribution and Logistics Consulting Services.
Size standard for 541620
A company qualifies as small under NAICS 541620 if its average annual receipts are $19.0M or less, counting affiliates.
In August 2026, the SBA proposed new size standards that would set this code at $295M (all of 5416). The proposal is not in effect. See our SBA size standards guide.
How to win contracts in 541620
- List the code in SAM.gov. Add 541620 to your registration if it describes work you do, and choose a primary code for your main business; see our SAM registration guide.
- Search by code. Filter SAM.gov contract opportunities and agency procurement forecasts by 541620 to find recurring buyers.
- Study past awards. Look at which agencies, contract vehicles and incumbents dominate the code before you pursue it.
- Target the right agencies. Our federal agency guides cover budgets, buying components and forecasts for 23 agencies.
- Look beyond federal. States, cities, counties and school districts buy the same services; see our state government guides.
How KSG helps
Kensington Sales Group's SDRs book meetings with public agencies across Federal, SLED, K-12 & Higher Ed, Healthcare, Tribal, Special Districts and Utilities. We find the program offices and buyers that spend in NAICS 541620 and get you in front of them before solicitations drop. See how our federal sales development works.