EPA-regulated facilities in Walworth County, WI

There are 1,066 EPA-regulated facilities inside Walworth County, Wisconsin. The most common kinds are hazardous waste (470), drinking water systems (325), water discharge (241). 4 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 26 have a violation on record.

Open the map of Walworth County

1,066facilities in the county
4in significant noncompliance
26with a violation on record
$0in penalties, last 5 years

By category

CategoryFacilities
Hazardous waste470
Large quantity generators4
Small quantity generators234
Transporters5
Chemical (RMP/TRI)58
Superfund5
Air emissions82
Major sources4
Minor sources1
Water discharge241
Major permits3
Minor permits178
Drinking water systems325
Greenhouse gas reporters3
Scrap yards1

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.

Superfund sites

Towns in Walworth 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.