Clean Air and Clean Water rules for small business owners
Small businesses meet these laws through certain activities, not through size. Here is who is touched, the 2025 penalty ceilings still in force for 2026, and a quick checklist.
Prepared by Prem Tax and Accounting Corp. Last checked against official sources on October 29, 2026.
The Clean Air Act and the Clean Water Act are the federal pollution laws, enforced by the EPA, with Illinois EPA running state permits. Our Pipe-Plume-Puddle Pass shows which apply. The statutes begin at 42 U.S.C. 7401 (air) and 33 U.S.C. 1251 (water).
- What applies depends on your activity, not your size.
- Federal court penalties reach $68,445 (water) and $124,426 (air) per violation per day, 2025 amounts in force for 2026.
- HFC leak-repair rules for systems of 15 pounds or more began January 1, 2026.
- EPA's small business policy (100 or fewer employees) can cut penalties for violations you find, report within 21 days and fix.
Who it covers
| Who | What can apply | Illinois note |
|---|---|---|
| Builders on 1 or more acres | Stormwater coverage and a pollution plan | ILR10; $250 under 5 acres, $750 at 5 or more |
| Industrial sites in listed categories | Stormwater coverage or a No Exposure certification | ILR00; $500 new |
| Refrigerant service | No venting, certified technicians; leak repair at 15 pounds or more of HFC | Federal rules apply |
| Auto body sprayers | Trained painters, filtered booths | ROSS registration if not exempt, $235 a year |
| Dry cleaners | National air rule for perchloroethylene | Annual retail license, $1,500 to $5,000 |
The numbers
| Item | Amount | Year or status |
|---|---|---|
| Knowing violations | Water: $5,000 to $50,000 a day, up to 3 years, or both. Air: a federal fine, up to 5 years, or both | Statute; water is first offense |
| Illinois civil penalty, base | Up to $100,000 plus $25,000 a day | 2025 base; indexed from July 1, 2026 |
Source: EPA, 40 CFR 19.4
Our checklist
Walk your site with the Pipe-Plume-Puddle Pass.
- Pipe: does process wastewater leave by drain, hose or pipe? Reaching a stream or storm sewer may need a permit.
- Puddle: where does rain run off bare soil or exposed materials? Check stormwater coverage.
- Plume: does anything spray, vent or evaporate, such as coatings or refrigerant?
- Oil: over 1,320 gallons in 55-gallon or larger containers above ground, where a spill could reach water, needs a spill plan.
- Paper: keep permits, plans and certificates together.
Mistakes people make
- Grading before stormwater coverage is in place.
- Venting refrigerant, or letting uncertified staff open a refrigerant circuit.
- Missing the 21-day window to disclose a violation you found yourself.
Call an environmental attorney for a notice of violation, work near wetlands or streams, a contaminated-site purchase, or a spill.
Common questions
Does every small business need an EPA permit?
No. It depends on the activity: acres disturbed, discharges, emissions and refrigerant handled.
Do the 2026 refrigerant leak rules cover home air conditioning?
No. The rule excludes residential and light commercial air conditioning and heat pumps.
Are environmental fines tax deductible?
Fines paid to a government generally are not (IRC 162(f)). Restitution or compliance amounts can qualify only if the order identifies them and you can prove it. See [small business compliance](/small-business-compliance/).
Official sources
- U.S. EPA: stormwater discharges from construction activities
- Illinois EPA: construction stormwater permits
- U.S. EPA: HFC leak repair fact sheet, January 2026
- U.S. EPA: small business compliance policy
- eCFR: 40 CFR 19.4, EPA civil penalty amounts
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