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EPA-regulated facilities in Natrona County, WY

There are 1,294 EPA-regulated facilities inside Natrona County, Wyoming. The most common kinds are water discharge (563), hazardous waste (555), air emissions (160). 3 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 48 have a violation on record. Penalties over the last five years total $5.5M across 3 sites.

Open the map of Natrona County

1,294facilities in the county
3in significant noncompliance
48with a violation on record
$5.5Min penalties, last 5 years

By category

CategoryFacilities
Hazardous waste555
Treatment, storage or disposal2
Large quantity generators6
Small quantity generators257
Transporters18
Chemical (RMP/TRI)45
Superfund5
Air emissions160
Major sources4
Synthetic minor sources7
Minor sources44
Water discharge563
Major permits1
Minor permits324
Drinking water systems63
Greenhouse gas reporters7
Scrap yards9

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 Natrona 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.