EPA-regulated facilities in Custer County, MT

There are 294 EPA-regulated facilities inside Custer County, Montana. The most common kinds are water discharge (220), hazardous waste (52), drinking water systems (14). 3 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 7 have a violation on record. Penalties over the last five years total $5.3M across 1 site.

Open the map of Custer County

294facilities in the county

3in significant noncompliance

7with a violation on record

$5.3Min penalties, last 5 years

By category

Category	Facilities
Hazardous waste	52
Small quantity generators	19
Chemical (RMP/TRI)	2
Superfund	1
Air emissions	13
Major sources	1
Synthetic minor sources	2
Water discharge	220
Major permits	1
Minor permits	174
Drinking water systems	14
Data centers	2
Recycling centers	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.

SOLARIS FEEDERS - KINSEY FEEDLOT 145 SIGNAL BUTTE ROAD, MILES CITY, MT, 59301 Significant noncompliance
MFWP MILES CITY FISH HATCHERY FISH HATCHERY RD, MILES CITY, MT, 59301 Significant noncompliance
BICE RANCH LLC - FEEDLOT E OF MOON CREEK RD N OF TONGUE RIVER RD, MILES CITY, MT, 59301 Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

UPS MILES CITY CENTER 3022 LOVE LANE, MILES CITY, MT, 59301 $5.3M in penalties

Superfund sites

USDA ARS MT FORT KEOGH LARRL MILES CITY W OF MILES CITY, MILES CITY, MT, 59301

Data centers

State of Montana Data Center
ZAYO GROUP - MONTANA STATE DATA CENTER MILES CITY N OF I-94 FROM EXIT 138 7MI W, MILES CITY, MT, 59301

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.