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EPA-regulated facilities in Union County, OH

There are 430 EPA-regulated facilities inside Union County, Ohio. The most common kinds are water discharge (188), hazardous waste (139), drinking water systems (77). None is in significant noncompliance, but 14 have a violation on record. Penalties over the last five years total $306k across 3 sites.

Open the map of Union County

430facilities in the county
0in significant noncompliance
14with a violation on record
$306kin penalties, last 5 years

By category

CategoryFacilities
Hazardous waste139
Treatment, storage or disposal3
Large quantity generators4
Small quantity generators67
Chemical (RMP/TRI)19
Superfund5
Air emissions44
Major sources6
Synthetic minor sources6
Minor sources12
Water discharge188
Major permits1
Minor permits25
Drinking water systems77
Greenhouse gas reporters1
Data centers11

A facility enrolled in several programs counts once in the total and once in each of its categories.

Largest penalties

Penalties assessed over the last five years.

Superfund sites

Data centers

Towns in Union 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.