EPA-regulated facilities in Mayes County, OK

There are 271 EPA-regulated facilities inside Mayes County, Oklahoma. The most common kinds are air emissions (122), hazardous waste (80), water discharge (48). 2 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 15 have a violation on record. Penalties over the last five years total $89k across 7 sites.

Open the map of Mayes County

271facilities in the county

2in significant noncompliance

15with a violation on record

$89kin penalties, last 5 years

By category

Category	Facilities
Hazardous waste	80
Large quantity generators	1
Small quantity generators	38
Chemical (RMP/TRI)	31
Superfund	6
Air emissions	122
Major sources	9
Synthetic minor sources	14
Minor sources	83
Water discharge	48
Major permits	4
Minor permits	31
Drinking water systems	37
Greenhouse gas reporters	8
Data centers	3
Scrap yards	1

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.

LOCUST GROVE PUBLIC WORKS AUTH P.O. BOX 246, LOCUST GROVE, OK, 74352 Significant noncompliance · $32k in penalties
GRAND RIVER DAM AUTH/CHOUTEAU COAL FIRED COMPLEX 3 MILES EAST OF CHOUTEAU ON HIGHWAY 412, CHOUTEAU, OK, 74337 Significant noncompliance · $6k in penalties

Largest penalties

Penalties assessed over the last five years.

CHOUTEAU PWA PO BOX 1089, CHOUTEAU, OK, 74337 $30k in penalties
AMERICAN CASTING 5265 HUNT ST, PRYOR, OK, 74361 $7k in penalties
LONE STAR IND INC - BUZZI UNICEM USA - PRYOR CEMENT PLANT 2430 S 437 RD, PRYOR, OK, 74361 $6k in penalties
RAE CORP / PRYOR PLANT 3600 E HWY 69A, PRYOR, OK, 74361 $5k in penalties
SALINA PUBLIC WORKS AUTH 703 SOUTH OWEN WALTERS BLVD., SALINA, OK, 74365 $2k in penalties

Superfund sites

KAISER AGRICULTURAL CHEMICALS INDIAN BASE MEREDIAN/OLD NIPAK RD., PRYOR, OK, 74361
FORT GIBSON RESERVOIR 4 MI N OF CHOUTEAU,OK ON US 69, PRYOR, OK, 74361
PRYOR CHEM CO 4463 HUNT ST, PRYOR, OK, 74361
STRAWHUN CONCRETE PLANT 33 STRAWHUN ROAD, PRYOR, OK, 74361
FRAILEY'S SALVAGE - CHOUTEAU 1013 SOUTH CHOUTEAU, CHOUTEAU, OK, 74337
FRAILEY'S RECYCLING EAST - CHOUTEAU 1106 S CHOUTEAU, CHOUTEAU, OK, 74337

Data centers

MYALL, LLC 3500 MAIN STREET, PRYOR, OK, 74361
MYALL LLC/PCO 4581 WEBB ST, PRYOR, OK, 74361
PRY DATA STORAGE FACILITY 4581 WEBB ST, PRYOR, OK, 74361

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.