Madison Water Quality Report
4 cities ranked · Average grade: C · Montana
Avg Score
63.6
Cities Ranked
4
Health Violations
3
PFAS Detected
1
63.6
County avg score
4
Cities ranked
25%
A or B grade
25%
D or F grade
3
Health violations
1
PFAS detected
Grade Distribution
How Madison cities scored
A
0
0%
Excellent
B
1
25%
Good
C
2
50%
Fair
D
0
0%
Poor
F
1
25%
Failing
Comparison
County vs Montana average
▼ 2.1 pts below state average
City Map
Water quality across Madison
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Madison
Best cities
Worst cities
Full Rankings
All 4 cities in Madison
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Ennis | B+ | 83.9 | 2K | 122 | Health Unresolved | |
| 2 | Virginia City | C+ | 68.4 | 2K | 48 | Health Unresolved | |
| 3 | Sheridan | C- | 58.6 | 632 | 82 | Unresolved | |
| 4 | Big Sky | F | 43.5 | 6K | 593 | Health Unresolved |