Gallatin, MT
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology.
Environmental data for Gallatin in Montana · Population: 122,194
TRI sites such as Gcc-Three Forks LLC; Darigold-Bozeman; Jtl Group Belgrade DBA Knife River - Belgrade; SDWIS systems such as BOZEMAN CITY OF; BELGRADE CITY OF; WEST YELLOWSTONE TOWN OF; NPL sites such as Idaho Pole Co. anchor Gallatin, MT's EPA extract. Derived burden score 39/100 (Moderate Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Gallatin include BELGRADE CITY OF; WEST YELLOWSTONE TOWN OF; THREE FORKS CITY OF, while Gcc-Three Forks LLC leads reported TRI pounds among local Form R filers. AQS median AQI 18 / peak 84 in 2024.
Burden score 39/100 (Moderate Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Gallatin -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Release-over-release change
What changed for Gallatin, MT: EPA TRI 2023 reporting year
Same facilities, both years
-0.9%
4 facilities that filed in 2022 and 2023
Whole inventory
-0.9%
46.1 thousand lb → 45.7 thousand lb, every facility that filed
- Gallatin, MT's total reported releases fell from 46.1 thousand lb in 2022 to 45.7 thousand lb in 2023, based on EPA TRI filings.
- Gallatin, MT's off-site transfers fell from 4.0 thousand lb in 2022 to 3.3 thousand lb in 2023, based on EPA TRI filings.
- Gallatin, MT's land releases fell from 15.1 thousand lb in 2022 to 14.5 thousand lb in 2023, based on EPA TRI filings.
- Gallatin, MT's air releases rose from 27.1 thousand lb in 2022 to 27.9 thousand lb in 2023, based on EPA TRI filings.
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 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 (50)
| System | System pop (SDWIS) | 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 | 2,325 | 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 | 3 |
| 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 |
| 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 | 10 |
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 |
Superfund Sites (1)
| Site Name | Status | HRS Score |
|---|---|---|
| Idaho Pole Co. | NPL Site | 38.29 |
Cities in Gallatin (7)
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.