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EPA-regulated facilities in Ontario County, NY

There are 1,049 EPA-regulated facilities inside Ontario County, New York. The most common kinds are hazardous waste (523), water discharge (436), drinking water systems (97). 12 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 52 have a violation on record. Penalties over the last five years total $6.4M across 15 sites.

Open the map of Ontario County

1,049facilities in the county
12in significant noncompliance
52with a violation on record
$6.4Min penalties, last 5 years

By category

CategoryFacilities
Hazardous waste523
Large quantity generators30
Small quantity generators163
Transporters3
Chemical (RMP/TRI)26
Superfund9
Air emissions78
Major sources8
Synthetic minor sources11
Minor sources28
Water discharge436
Major permits3
Minor permits326
Drinking water systems97
Greenhouse gas reporters2
Scrap yards1
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

Towns in Ontario 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.