EPA-regulated facilities in Idaho County, ID

There are 421 EPA-regulated facilities inside Idaho County, Idaho. The most common kinds are water discharge (234), drinking water systems (71), air emissions (61). 4 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 25 have a violation on record. Penalties over the last five years total $5.4M across 9 sites.

Open the map of Idaho County

421facilities in the county

4in significant noncompliance

25with a violation on record

$5.4Min penalties, last 5 years

By category

Category	Facilities
Hazardous waste	51
Small quantity generators	11
Chemical (RMP/TRI)	8
Superfund	20
Air emissions	61
Major sources	3
Synthetic minor sources	4
Minor sources	29
Water discharge	234
Minor permits	159
Drinking water systems	71
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.

ELK CITY WWTP ID-14, ELK CITY, ID, 83525 Significant noncompliance
KOOSKIA NATIONAL FISH HATCHERY 318 TOLL RD, KOOSKIA, ID, 83539 Significant noncompliance
GRANGEVILLE WATER DEPARTMENT MOUNTAIN VIEW RD, GRANGEVILLE, ID, 83530 Significant noncompliance
NORTH IDAHO CORRECTIONAL INSTITUTION 236 RADAR RD, COTTONWOOD, ID, 83522 Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

UNITED PARCEL SERVICE GRANGEVILLE 1245 HILL STREET, GRANGEVILLE, ID, 83530 $5.3M in penalties
IDAHO POWER CO. CASCADE HYDRO, CASCADE, ID, 83611 $73k in penalties
CLEARWATER FOREST INDUSTRIES 4700 ID-13, KOOSKIA, ID, 83539 $24k in penalties
FRIDAY EXPLORATION PROJECT 6 QUARTZ CREEK ROAD, ELK CITY, ID, 83525 $15k in penalties
O-K GRAVEL WORKS LLC 00618 111 46 HWY 55, CASCADE, ID, 83611 $3k in penalties

Superfund sites

USDOI BLM HWS GOLD & SILVER MINE ELK CY T29N R8E S23, ELK CITY, ID, 83525
USDOI BLM SULTAN SHAFT TOWNSHIP 29 NORTH, RANGE 8 EAST, SECTION 23, ELK CITY, ID, 83525
USDA FS NEZ PERCE NF: TROUT GROUP T28N, R7E, SEC 2, ELK CITY, ID, 83525
HORNET MINE TOWNSHIP 28 NORTH, RANGE 9 EAST, SECTIONS 5 AND 8, ELK CITY, ID, 83525
IDAHO CHAMPION GROUP LODE AND PACIFIC GROUP LODE CLAIMS THREE MILES SOUTH OF OROGRANDE, IDAHO, OROGRANDE, ID, 83525
KNOB HILL PIT MINE T 27 N R7E SEC 1, OROGRANDE, ID, 83525
USDA FS NEZ PERCE NF: PASADENA MINE 6 MILES SW OF ELK CITY, T27N R7E DEC 12, ELK CITY, ID, 83525
USDA FS NEZ PERCE NF: UMATILLA PROSPECT T27N, R7E, SEC 3, ELK CITY, ID, 83525
USDA NEZ PERCE NF: FRANK PECK LODE SITE 8 MILES SW OF ELK CITY, T27N R7E SEC 12, ELK CITY, ID, 83525
HOMESTAKE MINE THREE MILES SOUTH OF OROGRANDE, IDAHO, OROGRANDE, ID, 83525

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.