EPA-regulated facilities in Warren County, OH

There are 883 EPA-regulated facilities inside Warren County, Ohio. The most common kinds are hazardous waste (420), water discharge (314), air emissions (169). 6 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 33 have a violation on record. Penalties over the last five years total $16k across 2 sites.

Open the map of Warren County

883facilities in the county
6in significant noncompliance
33with a violation on record
$16kin penalties, last 5 years

By category

CategoryFacilities
Hazardous waste420
Treatment, storage or disposal1
Large quantity generators9
Small quantity generators191
Transporters4
Chemical (RMP/TRI)75
Superfund9
Air emissions169
Major sources11
Synthetic minor sources26
Minor sources89
Water discharge314
Major permits5
Minor permits37
Drinking water systems51
Greenhouse gas reporters4
Data centers4
Scrap yards3
Recycling centers1

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 Warren 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.