Middlesex Water Quality Report
1 cities ranked · Average grade: C- · New Hampshire
Avg Score
56.8
Cities Ranked
1
Health Violations
1
PFAS Detected
0
56.8
County avg score
1
Cities ranked
0%
A or B grade
0%
D or F grade
1
Health violations
0
PFAS detected
Grade Distribution
How Middlesex cities scored
A
0
0%
Excellent
B
0
0%
Good
C
1
100%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs New Hampshire average
▼ 5.5 pts below state average
City Map
Water quality across Middlesex
Each dot is a city, colored by grade. Click any city to view its full report.
County context
14
Superfund sites in Middlesex
87.6%
of residents on fluoridated water (CDC, 2020)
1,735
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Middlesex
Industrial polluters nearby
Facilities reporting the most surface-water releases in Middlesex, 2023.
Total reported releases to surface water: 1,735 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
HOLLINGSWORTH & VOSE CO WEST GROTON GROTON, MA01450 | Ammonia | 1,735 |
NASOYA FOODS USA LLC. AYER, MA01432 | — | — |
AMERICAN SUPERCONDUCTOR AYER, MA01432 | — | — |
MSI TRANSDUCERS CORP LITTLETON, MA01460 | — | — |
ASTRON INC PEPPERELL, MA01463 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Middlesex
Superfund sites nearby
Federally tracked hazardous-waste sites within Middlesex on the EPA National Priorities List.
- CHARLES GEORGE RECLAMATION TRUST LANDFILL
- FORT DEVENS
- HANSCOM FIELD HANSCOM AIR FORCE BASE
- INDUSTRI PLEX
- IRON HORSE PARK
+ 9 more sites
Source: EPA Superfund National Priorities List
Full Rankings
All 1 cities in Middlesex
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Stow | C- | 56.8 | 1K | 284 | Health Unresolved |