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EPA-regulated facilities in Northwest Hills Planning Region, CT

There are 710 EPA-regulated facilities inside Northwest Hills Planning Region, Connecticut. The most common kinds are hazardous waste (318), water discharge (256), air emissions (118). 9 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 32 have a violation on record. Penalties over the last five years total $344k across 3 sites.

Open the map of Northwest Hills Planning Region

710facilities in the county
9in significant noncompliance
32with a violation on record
$344kin penalties, last 5 years

By category

CategoryFacilities
Hazardous waste318
Treatment, storage or disposal2
Large quantity generators10
Small quantity generators121
Transporters4
Chemical (RMP/TRI)45
Superfund6
Air emissions118
Synthetic minor sources4
Minor sources86
Water discharge256
Major permits2
Minor permits172
Drinking water systems106

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 Northwest Hills Planning Region

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.