Merrimack Water Quality Report
1 cities ranked · Average grade: D · Connecticut
Avg Score
47.4
Cities Ranked
1
Health Violations
1
PFAS Detected
0
47.4
County avg score
1
Cities ranked
0%
A or B grade
100%
D or F grade
1
Health violations
0
PFAS detected
Grade Distribution
How Merrimack cities scored
A
0
0%
Excellent
B
0
0%
Good
C
0
0%
Fair
D
1
100%
Poor
F
0
0%
Failing
Comparison
County vs Connecticut average
▼ 11.4 pts below state average
City Map
Water quality across Merrimack
Each dot is a city, colored by grade. Click any city to view its full report.
County context
64.6%
of residents on fluoridated water (CDC, 2020)
323
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Merrimack
Industrial polluters nearby
Facilities reporting the most surface-water releases in Merrimack, 2023.
Total reported releases to surface water: 323 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
MERRIMACK STATION BOW, NH03304 | Ammonia | 254 |
WATTS REGULATOR CO DBA WEBSTER VALVE FRANKLIN, NH03235 | Copper | 66 |
ELEKTRISOLA INC. BOSCAWEN, NH03303 | Copper | 2 |
BROX INDUSTRIES INC HOOKSETT, NH03106 | — | — |
GE CO HOOKSETT, NH03106 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 1 cities in Merrimack
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Bow | D | 47.4 | 808 | 112 | Health Lead Unresolved |