EPA-regulated facilities in Major County, OK

There are 400 EPA-regulated facilities inside Major County, Oklahoma. The most common kinds are air emissions (354), water discharge (24), hazardous waste (15). None is in significant noncompliance, but 8 have a violation on record. Penalties over the last five years total $79k across 7 sites.

Open the map of Major County

400facilities in the county

0in significant noncompliance

8with a violation on record

$79kin penalties, last 5 years

By category

Category	Facilities
Hazardous waste	15
Treatment, storage or disposal	1
Small quantity generators	8
Chemical (RMP/TRI)	3
Air emissions	354
Major sources	1
Synthetic minor sources	57
Minor sources	255
Water discharge	24
Minor permits	15
Drinking water systems	11
Greenhouse gas reporters	3

A facility enrolled in several programs counts once in the total and once in each of its categories.

Largest penalties

Penalties assessed over the last five years.

MUSTANG GAS PRODUCTS LLC / THUNDERBIRD COMPRESSOR STATION 0.4 MI SW OF E0580/N2730 RDS, AMES, OK, 73718 $35k in penalties
JEFFERSON COMPRESSOR FACILITY 0.5 MI W OF E0515/N2520 RDS, FAIRVIEW, OK, 73737 $14k in penalties
CLEAN HARBORS - LONE MOUNTAIN FACILITY 40355 S CO RD 236, WAYNOKA, OK, 73860 $10k in penalties
ET GATHERING PROCESSING LLC / CHEYENNE VALLEY COMPRESSOR STATION 0.01MI E E0410/N4200 JN, ORIENTA, OK, 73860 $6k in penalties
MUSTANG GAS PRODUCTS LLC / SILVER LAKE GAS PLANT 0.35 MI NE OF E0550/N2680 RDS, AMES, OK, 73718 $6k in penalties

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.