EPA-regulated facilities in Mahoning County, OH

There are 1,440 EPA-regulated facilities inside Mahoning County, Ohio. The most common kinds are hazardous waste (810), water discharge (300), air emissions (216). 7 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 53 have a violation on record. Penalties over the last five years total $2.7M across 3 sites.

Open the map of Mahoning County

1,440facilities in the county
7in significant noncompliance
53with a violation on record
$2.7Min penalties, last 5 years

By category

CategoryFacilities
Hazardous waste810
Treatment, storage or disposal1
Large quantity generators19
Small quantity generators321
Transporters7
Chemical (RMP/TRI)72
Superfund10
Air emissions216
Major sources15
Synthetic minor sources18
Minor sources132
Water discharge300
Major permits4
Minor permits77
Drinking water systems190
Greenhouse gas reporters6
Data centers1
Scrap yards40
Recycling centers9

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

Data centers

Towns in Mahoning 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.