Johnston Water Quality Report
3 cities ranked · Average grade: B- · Oklahoma
Avg Score
72.5
Cities Ranked
3
Health Violations
3
PFAS Detected
0
72.5
County avg score
3
Cities ranked
67%
A or B grade
33%
D or F grade
3
Health violations
0
PFAS detected
Grade Distribution
How Johnston cities scored
A
1
33%
Excellent
B
1
33%
Good
C
0
0%
Fair
D
1
33%
Poor
F
0
0%
Failing
Comparison
County vs Oklahoma average
▲ 11.2 pts above state average
City Map
Water quality across Johnston
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Johnston
Best cities
Worst cities
County context
0.0%
of residents on fluoridated water (CDC, 2020)
Full Rankings
All 3 cities in Johnston
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Mannsville | A- | 87.8 | 587 | 72 | Health Unresolved | |
| 2 | Coleman | B+ | 82.6 | 600 | 85 | Health Unresolved | |
| 3 | Tishomingo | D | 47 | 7K | 139 | Health Unresolved |