EPA-regulated facilities in Jefferson County, IA
There are 114 EPA-regulated facilities inside Jefferson County, Iowa. The most common kinds are hazardous waste (51), water discharge (39), air emissions (35). 3 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 8 have a violation on record. Penalties over the last five years total $10k across 1 site.
Open the map of Jefferson County
By category
| Category | Facilities |
|---|---|
| Hazardous waste | 51 |
| Small quantity generators | 25 |
| Chemical (RMP/TRI) | 12 |
| Superfund | 3 |
| Air emissions | 35 |
| Major sources | 2 |
| Synthetic minor sources | 12 |
| Minor sources | 15 |
| Water discharge | 39 |
| Major permits | 1 |
| Minor permits | 15 |
| Drinking water systems | 5 |
| Greenhouse gas reporters | 1 |
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.
- HYCAST FOUNDRY LLC Significant noncompliance · $10k in penalties
- FAIRFIELD WATER TREATMENT PLANT Significant noncompliance
- PEKIN COMMUNITY HIGH SCHOOL Significant noncompliance
Superfund sites
Bordering counties
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.