Stillwater Water Quality Report
2 cities ranked · Average grade: C · Montana
Avg Score
64.7
Cities Ranked
2
Health Violations
2
PFAS Detected
0
64.7
County avg score
2
Cities ranked
50%
A or B grade
50%
D or F grade
2
Health violations
0
PFAS detected
Grade Distribution
How Stillwater cities scored
A
0
0%
Excellent
B
1
50%
Good
C
0
0%
Fair
D
1
50%
Poor
F
0
0%
Failing
Comparison
County vs Montana average
▼ 1.0 pts below state average
City Map
Water quality across Stillwater
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Stillwater
Best cities
Worst cities
County context
1
Superfund site in Stillwater
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Stillwater
Industrial polluters nearby
Facilities reporting the most surface-water releases in Stillwater, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
MONTANA SILVERSMITHS COLUMBUS, MT59019 | — | — |
SMC PRECIOUS METALS SMELTER & BASE METALS REFINERY COLUMBUS, MT59019 | — | — |
SMC NYE MINE SITE NYE, MT59061 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Stillwater
Superfund sites nearby
Federally tracked hazardous-waste sites within Stillwater on the EPA National Priorities List.
- MOUAT INDUSTRIES
Source: EPA Superfund National Priorities List
Full Rankings