Coos Water Quality Report
2 cities ranked · Average grade: C · Connecticut
Avg Score
64.3
Cities Ranked
2
Health Violations
2
PFAS Detected
0
64.3
County avg score
2
Cities ranked
0%
A or B grade
0%
D or F grade
2
Health violations
0
PFAS detected
Grade Distribution
How Coos cities scored
A
0
0%
Excellent
B
0
0%
Good
C
2
100%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs Connecticut average
▲ 5.5 pts above state average
City Map
Water quality across Coos
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Coos
Best cities
Worst cities
County context
1
Superfund site in Coos
10.5%
of residents on fluoridated water (CDC, 2020)
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Coos
Industrial polluters nearby
Facilities reporting the most surface-water releases in Coos, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
FCI BERLIN BERLIN, NH03570 | — | — |
FITCH FUEL CO INC. LANCASTER, NH03584 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Coos
Superfund sites nearby
Federally tracked hazardous-waste sites within Coos on the EPA National Priorities List.
- CHLOR ALKALI FACILITY FORMER
Source: EPA Superfund National Priorities List
Full Rankings