Coos Water Quality Report
6 cities ranked · Average grade: B · New Hampshire
Avg Score
76.8
Cities Ranked
6
Health Violations
6
PFAS Detected
0
76.8
County avg score
6
Cities ranked
67%
A or B grade
0%
D or F grade
6
Health violations
0
PFAS detected
Grade Distribution
How Coos cities scored
A
1
17%
Excellent
B
3
50%
Good
C
2
33%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs New Hampshire average
▲ 14.5 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
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
All 6 cities in Coos
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Lancaster | A- | 89 | 2K | 44 | Health Unresolved | |
| 2 | Berlin | B+ | 83.3 | 10K | 3 | Health Unresolved | |
| 3 | Whitefield | B+ | 81.9 | 2K | 16 | Health Unresolved | |
| 4 | Gorham | B- | 70.9 | 3K | 64 | Health Lead Unresolved | |
| 5 | Northumberland | C+ | 69.3 | 3K | 43 | Health Lead Unresolved | |
| 6 | Colebrook | C+ | 66.6 | 1K | 69 | Health Lead Unresolved |