Hillsborough Water Quality Report
17 cities ranked · Average grade: C+ · New Hampshire
Avg Score
67.6
Cities Ranked
17
Health Violations
16
PFAS Detected
5
67.6
County avg score
17
Cities ranked
59%
A or B grade
41%
D or F grade
16
Health violations
5
PFAS detected
Grade Distribution
How Hillsborough cities scored
A
6
35%
Excellent
B
4
24%
Good
C
0
0%
Fair
D
4
24%
Poor
F
3
18%
Failing
Comparison
County vs New Hampshire average
▲ 5.3 pts above state average
City Map
Water quality across Hillsborough
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Hillsborough
Worst cities
County context
6
Superfund sites in Hillsborough
45.9%
of residents on fluoridated water (CDC, 2020)
5
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Hillsborough
Industrial polluters nearby
Facilities reporting the most surface-water releases in Hillsborough, 2023.
Total reported releases to surface water: 5 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
MARMON UTILITY LLC MILFORD, NH03055 | Copper | 5 |
BROX INDUSTRIES INC HUDSON, NH03051 | — | — |
PARKER HANNIFIN CORP CHOMERICS DIV HUDSON, NH03051 | — | — |
MORGAN ADVANCED CERAMICS INC HUDSON, NH03051 | — | — |
COLT REFINING INC MERRIMACK, NH03054 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Hillsborough
Superfund sites nearby
Federally tracked hazardous-waste sites within Hillsborough on the EPA National Priorities List.
- FLETCHER S PAINT WORKS STORAGE
- MOHAWK TANNERY
- NEW HAMPSHIRE PLATING CO
- SAVAGE MUNICIPAL WATER SUPPLY
- SOUTH MUNICIPAL WATER SUPPLY WELL
+ 1 more site
Source: EPA Superfund National Priorities List
Full Rankings
All 17 cities in Hillsborough
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Litchfield | A | 93.5 | 7K | 1 | PFAS | |
| 2 | Antrim | A- | 89.9 | 920 | 12 | Health Unresolved | |
| 3 | Bedford | A- | 88.8 | 5K | 9 | Health PFAS Unresolved | |
| 4 | Nashua | A- | 88.7 | 89K | 4 | Health Unresolved | |
| 5 | Peterborough | A- | 85.3 | 5K | 46 | Health Unresolved | |
| 6 | Amherst | A- | 85.1 | 512 | 114 | Health Unresolved | |
| 7 | Merrimack | B+ | 84.2 | 26K | 42 | Health Unresolved | |
| 8 | Hudson | B | 75.4 | 17K | 68 | Health PFAS Unresolved | |
| 9 | Bennington | B | 75.4 | 1K | 73 | Health Unresolved | |
| 10 | Wilton | B | 75.2 | 2K | 28 | Health Lead Unresolved | |
| 11 | Manchester | D+ | 50.9 | 124K | 20 | Health PFAS Unresolved | |
| 12 | Greenville | D | 48.9 | 2K | 153 | Health Lead Unresolved | |
| 13 | Goffstown | D | 45.9 | 5K | 61 | Health Lead Unresolved | |
| 14 | Hillsborough | D | 45.9 | 3K | 224 | Health Lead Unresolved | |
| 15 | Milford | F | 43 | 10K | 195 | Health Unresolved | |
| 16 | Weare | F | 38.9 | 599 | 259 | Health Lead Unresolved | |
| 17 | Pelham | F | 35 | 2K | 220 | Health Lead Unresolved |