64.3
County avg score
14
Cities ranked
43%
A or B grade
29%
D or F grade
14
Health violations
8
PFAS detected
Grade Distribution
How Rockingham cities scored
A
1
7%
Excellent
B
5
36%
Good
C
4
29%
Fair
D
1
7%
Poor
F
3
21%
Failing
Comparison
County vs New Hampshire average
▼ 0.6 pts below state average
City Map
Water quality across Rockingham
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Rockingham
Best cities
Worst cities
County context
8
Superfund sites in Rockingham
39.5%
of residents on fluoridated water (CDC, 2020)
11
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Rockingham
Industrial polluters nearby
Facilities reporting the most surface-water releases in Rockingham, 2023.
Total reported releases to surface water: 11 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
SPRAGUE RIVER ROAD TERMINAL NEWINGTON, NH03801 | 1,2,4-Trimethylbenzene | 11 |
HOLOGIC INC LONDONDERRY, NH03053 | — | — |
ALCUMET INC LONDONDERRY, NH03053 | — | — |
L3 TECHNOLOGIES INC. LONDONDERRY, NH03053 | — | — |
LACTALIS US YOGURT INC. LONDONDERRY, NH03053 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Rockingham
Superfund sites nearby
Federally tracked hazardous-waste sites within Rockingham on the EPA National Priorities List.
- AUBURN ROAD LANDFILL
- BEEDE WASTE OIL
- COAKLEY LANDFILL
- KEEFE ENVIRONMENTAL SERVICES KES
- MOTTOLO PIG FARM
+ 3 more sites
Source: EPA Superfund National Priorities List
Full Rankings
All 14 cities in Rockingham
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Rye | A- | 86.7 | 4K | 6 | Health PFAS | |
| 2 | Portsmouth | B+ | 80.7 | 43K | 14 | Health PFAS Unresolved | |
| 3 | Newmarket | B | 79.3 | 5K | 239 | Health Unresolved | |
| 4 | Epping | B | 76.7 | 2K | 106 | Health Unresolved | |
| 5 | Newfields | B- | 72.7 | 550 | 22 | Health Lead Unresolved | |
| 6 | Hampstead | B- | 71 | 7K | 96 | Health PFAS Unresolved | |
| 7 | Seabrook | C+ | 68.2 | 14K | 221 | Health PFAS Unresolved | |
| 8 | New Castle | C+ | 66.7 | 910 | 29 | Health Lead Unresolved | |
| 9 | Brentwood | C+ | 66.5 | 1K | 7 | Health Lead Unresolved | |
| 10 | Northwood | C | 64.1 | 965 | 118 | Health Lead Unresolved | |
| 11 | Salem | D | 47.4 | 21K | 292 | Health PFAS Unresolved | |
| 12 | Derry | F | 42.5 | 18K | 390 | Health PFAS Unresolved | |
| 13 | Raymond | F | 40.2 | 4K | 154 | Health Unresolved | |
| 14 | Exeter | F | 37.5 | 14K | 203 | Health PFAS Unresolved |