Dukes Water Quality Report
4 cities ranked · Average grade: B · Massachusetts
Avg Score
78.7
Cities Ranked
4
Health Violations
4
PFAS Detected
1
78.7
County avg score
4
Cities ranked
75%
A or B grade
25%
D or F grade
4
Health violations
1
PFAS detected
Grade Distribution
How Dukes cities scored
A
1
25%
Excellent
B
2
50%
Good
C
0
0%
Fair
D
1
25%
Poor
F
0
0%
Failing
Comparison
County vs Massachusetts average
▼ 0.6 pts below state average
City Map
Water quality across Dukes
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Dukes
Best cities
Worst cities
County context
62.4%
of residents on fluoridated water (CDC, 2020)
Full Rankings
All 4 cities in Dukes
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Edgartown | A | 93.5 | 8K | 11 | Health Unresolved | |
| 2 | Oak Bluffs | B+ | 84.8 | 24K | 102 | Health Unresolved | |
| 3 | Tisbury | B+ | 82.3 | 6K | 35 | Health Unresolved | |
| 4 | Chilmark | D+ | 54.1 | 930 | 146 | Health Unresolved |