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EPA-regulated facilities near Ronkonkoma, NY

There are 1,820 EPA-regulated facilities within 5 miles of Ronkonkoma, New York. The most common kinds are hazardous waste (1,403), water discharge (394), air emissions (181). 15 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 39 have a violation on record. Penalties over the last five years total $458k across 17 sites.

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1,820facilities within 5 miles
15in significant noncompliance
39with a violation on record
$458kin penalties, last 5 years

By category

CategoryFacilities
Hazardous waste1,403
Large quantity generators59
Small quantity generators405
Transporters11
Chemical (RMP/TRI)31
Superfund7
Air emissions181
Major sources7
Synthetic minor sources13
Minor sources151
Water discharge394
Minor permits220
Drinking water systems9
Greenhouse gas reporters4

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

County

Nearby towns

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. Distances are from the center of Ronkonkoma as the Census Bureau records it. The Data page explains where each record comes from and how it can mislead.