Big Horn Water Quality Report
1 cities ranked · Average grade: F · Montana
Avg Score
44
Cities Ranked
1
Health Violations
1
PFAS Detected
1
44
County avg score
1
Cities ranked
0%
A or B grade
100%
D or F grade
1
Health violations
1
PFAS detected
Grade Distribution
How Big Horn cities scored
A
0
0%
Excellent
B
0
0%
Good
C
0
0%
Fair
D
0
0%
Poor
F
1
100%
Failing
Comparison
County vs Montana average
▼ 21.7 pts below state average
City Map
Water quality across Big Horn
Each dot is a city, colored by grade. Click any city to view its full report.
County context
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Big Horn
Industrial polluters nearby
Facilities reporting the most surface-water releases in Big Horn, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
DECKER COAL CO DECKER, MT59025 | — | — |
HARDIN GENERATING STATION HARDIN, MT59034 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 1 cities in Big Horn
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Hardin | F | 44 | 4K | 222 | Health Unresolved |