Ravalli Water Quality Report
4 cities ranked · Average grade: C+ · Montana
Avg Score
65.9
Cities Ranked
4
Health Violations
4
PFAS Detected
2
65.9
County avg score
4
Cities ranked
50%
A or B grade
25%
D or F grade
4
Health violations
2
PFAS detected
Grade Distribution
How Ravalli cities scored
A
0
0%
Excellent
B
2
50%
Good
C
1
25%
Fair
D
1
25%
Poor
F
0
0%
Failing
Comparison
County vs Montana average
▲ 0.2 pts above state average
City Map
Water quality across Ravalli
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Ravalli
Best cities
Worst cities
County context
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Ravalli
Industrial polluters nearby
Facilities reporting the most surface-water releases in Ravalli, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
CORIXA CORP D/B/A GLAXOSMITHKLINE VACCINES - HAMILTON HAMILTON, MT59840 | — | — |
LUBRIZOL VICTOR, MT59875 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 4 cities in Ravalli
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Pinesdale | B | 79.5 | 800 | 202 | Health Unresolved | |
| 2 | Stevensville | B- | 70.9 | 2K | 124 | Health Unresolved | |
| 3 | Darby | C | 60.2 | 1K | 246 | Health Unresolved | |
| 4 | Hamilton | D+ | 53 | 7K | 450 | Health Unresolved |