EPA-regulated facilities in Marion County, OH

There are 400 EPA-regulated facilities inside Marion County, Ohio. The most common kinds are hazardous waste (206), water discharge (95), air emissions (68). 4 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 22 have a violation on record. Penalties over the last five years total $5.3M across 1 site.

Open the map of Marion County

400facilities in the county
4in significant noncompliance
22with a violation on record
$5.3Min penalties, last 5 years

By category

CategoryFacilities
Hazardous waste206
Large quantity generators7
Small quantity generators79
Chemical (RMP/TRI)35
Superfund4
Air emissions68
Major sources8
Synthetic minor sources6
Minor sources38
Water discharge95
Major permits2
Minor permits43
Drinking water systems66
Greenhouse gas reporters3
Scrap yards1

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.

Largest penalties

Penalties assessed over the last five years.

Superfund sites

Towns in Marion 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.