PlainEnviro

Flathead, MT

Moderate Risk (38/100)

A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology.

Environmental data for Flathead in Montana · Population: 108,445

Flathead, MT is tracked across three EPA datasets covering 5 Toxics Release Inventory (TRI) facilities, 102 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 38/100 (Moderate Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.

Industrial disclosures inside the county total 866.9K lbs of reported toxic releases under EPCRA Section 313, while 11 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 42 and a peak AQI of 95 in 2024, with 69% of observed days rated "Good" (0–50).

All figures below draw directly from federal EPA records, TRI self-reported emissions, SDWIS compliance history, NPL Hazard Ranking System scores, and AQS daily AQI summaries, and are not adjusted, weighted, or forecast. A past violation or elevated score does not itself indicate current unsafe conditions; it documents the regulatory and disclosure history publicly filed with the U.S. Environmental Protection Agency through the most recent reporting cycle.

Population
108,445
TRI Facilities
5
Water Systems
102
Superfund Sites
0
Total Releases
866.9K lbs

Air Quality History (2020–2024)

EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.

Year Good Moderate Unhealthy (SG) Max AQI
2024 253 (69%) 113 0 95
2023 237 (65%) 120 6 160
2022 249 (68%) 113 2 152
2021 268 (73%) 88 8 155
2020 286 (78%) 72 3 206
2024 Good Air Quality: 69% of days
Median AQI: 42

Source: EPA Air Quality System (AQS) Annual AQI by County EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)

For real-time air quality readings and pollutant breakdowns in Montana, see the EPA's AirNow.gov.

Water Systems (102)

System Population Violations
WHITEFISH CITY OF 10,418 0
FLATHEAD COUNTY WATER AND SEWER 7,775 0
COLUMBIA FALLS CITY OF 4,450 0
BIG MOUNTAIN WATER COMPANY 2,435 0
LAKESIDE WATER SYSTEM 1,225 0
HUNGRY HORSE CO WATER AND SEWER DISTRICT 1,135 0
ST MARY HEADQUARTERS AND CG 1,030 0
MEADOW LAKE CO WATER AND SEWER DISTRICT 950 0
SOMERS CO WATER AND SEWER DIST 765 0
PTARMIGAN VILLAGE INC 600 0
HEADQUARTERS APGAR 500 0
FLATHEAD CO WATER DISTRICT NO 8 475 0
CORAM COUNTY WATER AND SEWER DISTRICT 450 0
FOREST ACRES TR PK WHITEFISH 390 0
CHERRY VIEW 352 0
MARTIN CITY COUNTY WATER DISTRICT 340 0
IRON HORSE HOMEOWNERS ASSOC 335 0
SOUTHSIDE PUBLIC WATER SUPPLY 306 0
NORTHERN PINES COMMUNITY HOA 295 0
ALPINE PACIFIC UTILITIES 270 0
COUNTRY LAKE HOMES WHITEFISH 260 0
PONDEROSA HOMEOWNERS ASSN INC 246 0
KOKANEE BEND HOA 230 0
FLATHEAD COUNTY WATER DIST 101 210 2
HAPPY VALLEY WATER DIST B KSPL 207 0
LION MOUNTAIN HOMEOWNERS ASSOC 204 0
GREENWOOD VILLAGE RV AND MHP 195 0
TAMARACK WOODS HOA LAKESIDE 180 0
FOX HILL ESTATES 163 0
EAST EVERGREEN MOBILE MANOR 155 0
MEADOWLAND HOA 150 0
YOUTH WITH A MISSION 150 0
ROCKY CLIFF ESTATES 140 0
NORTHWOODS WATER SYSTEM COOP INC 135 1
SUNRISE TERRACE SUBD NO 2 131 0
MEADOW HILLS WATER AND SEWER DISTRICT 130 0
WEST VALLEY PINES HOA INC 130 0
STILLWATER ESTATES COUNTY W AND S DIST 130 0
EMBARK AT FLATHEAD VALLEY 130 1
TWO MILE TRACT HOA 128 0
COUNTRY ESTATES MBLE HOME PARK 125 0
ALPINE VILLAGE WUA 125 0
QUAIL RIDGE 123 0
THE BENCHES 123 0
HOLBROOK ESTATES 120 0
WETTINGTON WATER DISTRICT INC 119 2
RIVERSIDE MOBILE HOME PARK 100 0
LAKESHORE HEIGHTS HOA 100 0
THOMPSON RANCHETTES II 100 0
NORTH HAVEN HEIGHTS WATER ASSOC INC 95 0
STONERIDGE HOME OWNERS ASSOCIATION 95 0
LAKEVIEW PARK ESTATES HOMEOWNERS ASSOC 92 0
PLEASANT HILL ESTATES HOA 90 2
WEST GLACIER WUA 90 0
STILLWATER WATER DISTRICT 85 0
PLEASANT VIEW HOMESITES W AND S DISTRICT 85 1
GREEN ACRES COURT 85 0
OUTBACK MOBILE HOME SETTLEMENT 80 0
HIDEAWAY TR PK COLUMBIA FALLS 75 1
ASPEN KNOLL 75 0
ASHLEY HILLS HOA 75 0
EMERALD HEIGHTS HOA WATER & SEWER DIST 70 0
PANORAMIC MOUNTAIN RIVER HEIGHTS W DIST 65 0
HILLCREST COMMUNITY WATER 65 0
SOUTH EIGHTY WATER 63 0
EAST VALLEY ESTATES 63 0
HALFMOON MOBILE HOME PARK INC 60 0
SKYVIEW PARK 55 1
CHAUTAUQUA TERRACE HOA 55 0
BLANCHARD HOLLOW ESTATES WUA 53 0
FIELDSTONE SUBDIVISION 52 0
R J NORTHERN PARK 50 0
FOREST HILL HOA 50 0
DISTRICT COURT LLC 50 0
HELENA NORTH KOA 50 0
STONE RIDGE WATER COMPANY 50 0
ROSEWOOD ACRES 50 0
WHITEFISH HILLS VILLAGE 50 0
NORTHFORK TR CT COLUMBIA FALLS 48 0
COLUMBIA RANGE HOA 47 1
SKY RANCH WATER ASSOCIATION 45 0
PRAIRIE FALCON ACRES 41 0
HANSONS TRAILER COURT 40 0
SPRUCE MEADOWS HOA 40 0
DWAYNES VILLAGE 40 0
EAST WOOD VILLAGE TRAILER PARK 36 0
FOYS LAKESIDE ESTATES WATER & SEWER DIST 36 1
WHITEFISH RIVER RANCH 36 0
RIDGEVIEW WATER USERS ASSOC 35 0
BIG SKY MOBILE MANOR 35 1
ELK PARK VILLAGE 35 0
RIVERVIEW OVERLOOK HOA 33 0
HADLEY ROAD HOA 33 0
WAPITI ACRES COUNTY WATER AND SEWER DIST 32 0
GREAT BEAR ESTATES 32 0
BROOK DRIVE WATER ASSN 30 0
TIMBER RIDGE HOA 30 0
SWEETGRASS RANCH SUBDIVISION 30 0
SWAN RIDGE HOA 28 0
COUNTRY COURT COMMUNITY INC 25 0
COUNTRY BOURNE 25 0
HALFMOON MEADOWS HOA 25 0

TRI Facilities (5)

# Facility Total Releases
1 Weyerhaeuser Nr 866.1K lbs
2 Jtl Group-Kalispell DBA Knife River - Kalispell 790 lbs
3 Cityservicevalcon LLC Kalispell Bulk Facility 0 lbs
4 Weyerhaeuser Nr 0 lbs
5 Cityservicevalcon LLC South Plant Bulk Facility 0 lbs

Cities in Flathead (2)

Kalispell
Pop: -
4 facilities · 71 water
Columbia Falls
Pop: -
1 facilities · 27 water

Frequently Asked Questions

What is the environmental risk level in Flathead, Montana? ▼
Flathead, MT has an environmental risk score of 38/100 (Moderate Risk), based on 5 TRI facilities, 0 Superfund sites, and 102 water systems on record. 11 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in Flathead? ▼
No Superfund National Priorities List (NPL) sites are currently registered in Flathead, MT in the EPA database.
How many toxic release facilities are in Flathead? ▼
Flathead, MT has 5 TRI-reporting facilities on record with the EPA Toxic Release Inventory, with a combined total of 866.9K lbs in reported toxic releases. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in Flathead? ▼
In 2024, Flathead, MT recorded a median AQI of 42 and a peak AQI of 95. 69% of monitored days had "Good" air quality (AQI 0–50). Source: EPA Air Quality System (AQS) Annual AQI by County.
Is the drinking water safe in Flathead? ▼
Flathead, MT has 102 EPA-regulated water systems. 11 systems have reported health-based violations (MCL exceedances). A past violation does not necessarily mean water is currently unsafe. For current water quality, contact your local water utility. Source: EPA SDWIS.
What environmental agencies cover Flathead? ▼
Environmental compliance in Flathead, Montana is overseen by the U.S. Environmental Protection Agency (EPA) at the federal level and the Montana state environmental agency. Facilities report to the EPA Toxic Release Inventory, water systems are regulated under the Safe Drinking Water Act, and contaminated sites are managed under the Superfund program. Contact your state environmental agency for local concerns.

What does this county environmental profile show?

This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.

Related Guides

Understanding EPA Data
How EPA collects and publishes environmental data
Environmental Justice
Who lives near polluters and environmental hazards
How to Check Environmental Quality
Step-by-step guide to checking your local environment

Read our methodology - how this data is sourced, computed, and verified.

Related

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro Editorial