EPA-regulated facilities in Weston County, WY

There are 210 EPA-regulated facilities inside Weston County, Wyoming. The most common kinds are water discharge (104), hazardous waste (57), air emissions (43). 2 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 16 have a violation on record.

Open the map of Weston County

210facilities in the county

2in significant noncompliance

16with a violation on record

$0in penalties, last 5 years

By category

Category	Facilities
Hazardous waste	57
Large quantity generators	1
Small quantity generators	17
Transporters	2
Chemical (RMP/TRI)	5
Superfund	1
Air emissions	43
Major sources	2
Minor sources	5
Water discharge	104
Minor permits	69
Drinking water systems	17
Greenhouse gas reporters	3

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.

OSAGE JUNIPER NEWCASTLE SAND UNIT UNKNOWN, UNKNOWN, WY, 00000 Significant noncompliance
ROCK WELL BEAVER CREEK DISCHARGES UNKNOWN, UNKNOWN, WY, 00000 Significant noncompliance

Superfund sites

NEW CASTLE MERCURY SPILL 200 ROUNDUP AVE, NEWCASTLE, WY, 82701

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.