EPA-regulated facilities in Mellette County, SD
There are 22 EPA-regulated facilities inside Mellette County, South Dakota. The most common kinds are water discharge (20), drinking water systems (2), air emissions (1). None has a current violation on record.
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By category
| Category | Facilities |
|---|---|
| Air emissions | 1 |
| Water discharge | 20 |
| Minor permits | 18 |
| Drinking water systems | 2 |
A facility enrolled in several programs counts once in the total and once in each of its categories.
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.