Gallatin, MT
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 Gallatin in Montana · Population: 122,194
Gallatin, MT is tracked across three EPA datasets covering 4 Toxics Release Inventory (TRI) facilities, 51 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 34/100 (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 226.5K lbs of reported toxic releases under EPCRA Section 313, while 7 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 18 and a peak AQI of 84 in 2024, with 90% 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.
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 | 329 (90%) | 36 | 0 | 84 |
| 2023 | 331 (91%) | 34 | 0 | 98 |
| 2022 | 290 (79%) | 71 | 4 | 148 |
| 2021 | 243 (67%) | 107 | 14 | 158 |
| 2020 | 290 (79%) | 65 | 9 | 162 |
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 (51)
| System | Population | Violations |
|---|---|---|
| BOZEMAN CITY OF | 56,000 | 0 |
| BELGRADE CITY OF | 10,460 | 1 |
| WEST YELLOWSTONE TOWN OF | 9,899 | 2 |
| NORTH STAR ZOOT WATER | 4,323 | 0 |
| RIVER ROCK COUNTY WATER AND SEWER DIST | 4,200 | 0 |
| RAE WATER AND SEWER DIST 313 | 2,220 | 0 |
| THREE FORKS CITY OF | 1,900 | 1 |
| MANHATTAN TOWN OF | 1,800 | 0 |
| VALLEY GROVE SUBDIVISION | 825 | 0 |
| LANDMARK SUBDIVISION | 750 | 0 |
| ELK GROVE WATER | 672 | 0 |
| GENESIS BUSINESS PARK | 670 | 0 |
| BAXTER CREEK NO 2 HOA | 450 | 2 |
| WYLIE CREEK ESTATES SUBDIVISION | 400 | 0 |
| MT MOONLIGHT BASIN | 355 | 0 |
| FIRELIGHT MEADOWS LLC | 350 | 0 |
| LEXLEY ACRES MOBILE HOME PARK | 250 | 0 |
| HEBGEN LAKE ESTATES CO WATER SEWER DISTR | 230 | 0 |
| SPIRIT HILLS SUBDIVISION | 230 | 0 |
| STAR MOBILE HOME PARK | 190 | 0 |
| CHURCHILL NORTH SUBDIVISION | 155 | 0 |
| SPRINGVALE SUBDIVISION | 150 | 0 |
| COBBLESTONE SUBDIVISION | 150 | 0 |
| AVALON SUBDIVISION | 135 | 0 |
| MT ELLIS ACADEMY | 106 | 6 |
| MANHATTAN CAMPER COURT | 105 | 0 |
| GALLATIN VILLAGE MOB HM PARK | 100 | 0 |
| RIDERS TRAILER COURT | 100 | 0 |
| GODFREY CANYON ESTATES | 100 | 2 |
| SETTLEMENT THE | 100 | 0 |
| COUNTRY HAVEN ESTATES WHISPERING PINES | 100 | 0 |
| STANS GARDEN | 100 | 0 |
| MYSTIC HEIGHTS HOA BOZEMAN | 96 | 0 |
| SPRINGHILL PARK SUBDIVISION | 90 | 0 |
| YELLOWSTONE HOLIDAY WTR AND SEW DISTRICT | 85 | 0 |
| CHURCHILL RETIREMENT HOME | 80 | 0 |
| BRIDGER BASE WATER SYSTEM | 75 | 0 |
| PONDEROSA MB HOME SUBD | 70 | 0 |
| THOMSON MOBILE HOME PARK | 65 | 0 |
| POTTS TRAILER COURT BELGRADE | 50 | 0 |
| BELGRADE TRAILER COURT | 50 | 0 |
| COONEY ENTERPRISES | 50 | 0 |
| ANTLER RIDGE HOMEOWNERS ASSOCIATION | 50 | 0 |
| GRAVEL HOLLOW LLC | 50 | 0 |
| FRANKLIN HILLS SUBDIVISION | 50 | 0 |
| FOREST CREEK SUBD | 45 | 0 |
| ROCKY CREEK TR COURT | 35 | 0 |
| BMP LINCOLN RENTALS LLC | 31 | 0 |
| HARDIN SUBDIVISION | 28 | 0 |
| DYKSTERHOUSE WELL USERS ASSOC | 28 | 0 |
| FISHERMANS VILLAGE SUBDIVISION | 25 | 9 |
TRI Facilities (4)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Gcc-Three Forks LLC | 210.7K lbs |
| 2 | Darigold-Bozeman | 14.3K lbs |
| 3 | Jtl Group Belgrade DBA Knife River - Belgrade | 1.6K lbs |
| 4 | Johns Manville-Belgrade Plant | 0 lbs |
Cities in Gallatin (3)
Frequently Asked Questions
What is the environmental risk level in Gallatin, Montana? ▼
Are there Superfund sites in Gallatin? ▼
How many toxic release facilities are in Gallatin? ▼
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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.
Read our methodology - how this data is sourced, computed, and verified.