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EPA-regulated facilities in Mercer County, PA

There are 1,420 EPA-regulated facilities inside Mercer County, Pennsylvania. The most common kinds are water discharge (858), hazardous waste (314), drinking water systems (199). 32 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 103 have a violation on record. Penalties over the last five years total $3.3M across 16 sites.

Open the map of Mercer County

1,420facilities in the county
32in significant noncompliance
103with a violation on record
$3.3Min penalties, last 5 years

By category

CategoryFacilities
Hazardous waste314
Large quantity generators15
Small quantity generators199
Transporters7
Chemical (RMP/TRI)67
Superfund7
Air emissions169
Major sources10
Synthetic minor sources15
Minor sources101
Water discharge858
Major permits9
Minor permits787
Drinking water systems199
Greenhouse gas reporters6
Scrap yards4

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 Mercer 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.