New Haven Water Quality Report
31 cities ranked · Average grade: C · Connecticut
Avg Score
64.9
Cities Ranked
31
Health Violations
19
PFAS Detected
28
64.9
County avg score
31
Cities ranked
42%
A or B grade
35%
D or F grade
19
Health violations
28
PFAS detected
Grade Distribution
How New Haven cities scored
A
1
3%
Excellent
B
12
39%
Good
C
7
23%
Fair
D
6
19%
Poor
F
5
16%
Failing
Comparison
County vs Connecticut average
▲ 6.1 pts above state average
City Map
Water quality across New Haven
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in New Haven
Best cities
Worst cities
Full Rankings
All 31 cities in New Haven
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Beacon Falls | A | 92.1 | 23K | 10 | Health Unresolved | |
| 2 | Ansonia | B+ | 84.4 | 419K | 32 | PFAS Unresolved | |
| 3 | Ansonia | B+ | 84.4 | 419K | 32 | PFAS Unresolved | |
| 4 | Ansonia | B+ | 84.4 | 419K | 32 | PFAS Unresolved | |
| 5 | Ansonia | B+ | 84.4 | 419K | 32 | PFAS Unresolved | |
| 6 | Ansonia | B+ | 84.4 | 419K | 32 | PFAS Unresolved | |
| 7 | Ansonia | B+ | 84.4 | 419K | 32 | PFAS Unresolved | |
| 8 | Ansonia | B+ | 82.4 | 432K | 41 | PFAS Unresolved | |
| 9 | Ansonia | B+ | 82.4 | 432K | 41 | PFAS Unresolved | |
| 10 | Ansonia | B+ | 80.2 | 420K | 45 | PFAS Unresolved | |
| 11 | Ansonia | B+ | 80.2 | 420K | 45 | PFAS Unresolved | |
| 12 | Ansonia | B- | 74.8 | 21K | 35 | Health PFAS Unresolved | |
| 13 | Clinton | B- | 74.3 | 34K | 288 | PFAS Unresolved | |
| 14 | Ansonia | C+ | 68.8 | 477K | 85 | Health PFAS Unresolved | |
| 15 | Clinton | C+ | 68.5 | 35K | 337 | Health PFAS Unresolved | |
| 16 | Ansonia | C+ | 68.1 | 549K | 126 | Health PFAS Unresolved | |
| 17 | Clinton | C+ | 66.2 | 34K | 347 | Health PFAS Unresolved | |
| 18 | Middlebury | C | 64.8 | 143K | 124 | Health Unresolved | |
| 19 | Ansonia | C- | 60 | 456K | 127 | PFAS Unresolved | |
| 20 | Middlebury | C- | 55.4 | 125K | 154 | Health PFAS Unresolved | |
| 21 | Ansonia | D+ | 54.8 | 432K | 92 | Health PFAS Unresolved | |
| 22 | Clinton | D+ | 52.5 | 34K | 567 | Health PFAS Unresolved | |
| 23 | Middlebury | D+ | 50 | 125K | 173 | Health Unresolved | |
| 24 | Ansonia | D | 49.4 | 784K | 200 | Health PFAS Unresolved | |
| 25 | Ansonia | D | 48 | 515K | 180 | Health PFAS Unresolved | |
| 26 | Clinton | D | 46.8 | 35K | 482 | Health PFAS Unresolved | |
| 27 | Middlebury | F | 44 | 9K | 436 | Health PFAS Unresolved | |
| 28 | Ansonia | F | 38.7 | 419K | 234 | Health PFAS Unresolved | |
| 29 | Ansonia | F | 34.5 | 573K | 663 | Health PFAS Unresolved | |
| 30 | Ansonia | F | 34.5 | 520K | 577 | Health PFAS Unresolved | |
| 31 | Ansonia | F | 33.5 | 591K | 555 | Health PFAS Unresolved |