Beaverhead, 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 Beaverhead in Montana · Population: 9,590
TRI sites such as Big Hole National Battlefield; SDWIS systems such as DILLON CITY OF; KELLER SUBDIVISION NO 2 HOA; HILDRETH SUBDIVISION NO 2 anchor Beaverhead, MT's EPA extract. Derived burden score 13/100 (Low 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 Beaverhead include HILDRETH SUBDIVISION NO 3; SKYLINE TR CT AND RV PARK; CLARKS LOOKOUT, while Big Hole National Battlefield leads reported TRI pounds among local Form R filers. AQS median AQI 12 / peak 180 in 2024.
Burden score 13/100 (Low 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 Beaverhead -- 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.
Air Quality History (2023–2024)
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 | 298 (86%) | 46 | 0 | 180 |
| 2023 | 344 (96%) | 12 | 2 | 124 |
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 (9)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| DILLON CITY OF | 4,300 | 0 |
| KELLER SUBDIVISION NO 2 HOA | 300 | 0 |
| HILDRETH SUBDIVISION NO 2 | 300 | 0 |
| LIMA TOWN OF | 279 | 0 |
| HILDRETH SUBDIVISION NO 3 | 128 | 1 |
| RED SKY MOBILE HOME COMMUNITY | 80 | 0 |
| SKYLINE TR CT AND RV PARK | 75 | 3 |
| CLARKS LOOKOUT | 62 | 26 |
| BEAVERHEAD JACKSON WATER AND SEWER DIST | 58 | 62 |
TRI Facilities (1)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Big Hole National Battlefield | 0 lbs |
Cities in Beaverhead (4)
Frequently Asked Questions
What is the environmental risk level in Beaverhead, Montana? ▼
Are there Superfund sites in Beaverhead? ▼
How many toxic release facilities are in Beaverhead? ▼
What is the air quality in Beaverhead? ▼
Is the drinking water safe in Beaverhead? ▼
What environmental agencies cover Beaverhead? ▼
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.