EPA-regulated facilities in Mercer County, IL
There are 205 EPA-regulated facilities inside Mercer County, Illinois. The most common kinds are water discharge (85), air emissions (63), hazardous waste (42). 2 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 14 have a violation on record.
By category
| Category | Facilities |
|---|---|
| Hazardous waste | 42 |
| Large quantity generators | 3 |
| Small quantity generators | 20 |
| Chemical (RMP/TRI) | 5 |
| Air emissions | 63 |
| Minor sources | 53 |
| Water discharge | 85 |
| Minor permits | 53 |
| Drinking water systems | 27 |
A facility enrolled in several programs counts once in the total and once in each of its categories.
In significant noncompliance
The EPA's designation for its most serious or persistent violations, as of the latest data.
- NEW WINDSOR Significant noncompliance
- BRANDON KING PRIVATE SEWAGE SYSTEM Significant noncompliance
Bordering counties
- Des Moines County, IA
- Henderson County
- Henry County
- Knox County
- Louisa County, IA
- Rock Island County
- Warren County
Reading these numbers
These are regulatory records, not measurements of pollution. Most facilities appear because they hold a permit or file reports, and most of them are compliant; a listing is not a claim that a facility has polluted anything. Compliance status and penalties are the EPA's own determinations in data retrieved Oct 9, 2026. The Data page explains where each record comes from and how it can mislead.