EPA-regulated facilities in Clay County, SD
There are 93 EPA-regulated facilities inside Clay County, South Dakota. The most common kinds are water discharge (54), hazardous waste (27), air emissions (10). None is in significant noncompliance, but 2 have a violation on record.
By category
| Category | Facilities |
|---|---|
| Hazardous waste | 27 |
| Large quantity generators | 1 |
| Small quantity generators | 13 |
| Chemical (RMP/TRI) | 1 |
| Air emissions | 10 |
| Major sources | 2 |
| Synthetic minor sources | 2 |
| Minor sources | 1 |
| Water discharge | 54 |
| Major permits | 1 |
| Minor permits | 33 |
| Drinking water systems | 6 |
| Greenhouse gas reporters | 2 |
A facility enrolled in several programs counts once in the total and once in each of its categories.
Towns in Clay County
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.