New Hampshire
Water Quality Report
85 Good
Average Score
85/100
Water Systems
99
Population
800,516
Violations
108 12 unresolved
Score Distribution
23 A
0 B
0 C
0 D
1 F
Top Contaminant Violations
| Contaminant | Violations |
|---|---|
| Copper (90th percentile) | 1 |
Lowest Scoring Water Systems
0
Contoocook Village Pct F
NH1191010 Concord, NH 1,600 served
90
Keene Water Dept A
NH1241010 Keene, NH 30,000 served
90
Pease Trade Port A
NH1951020 Portsmouth, NH 9,900 served
90
Salem Water Dept A
NH2051010 Salem, NH 21,000 served
90
Pittsfield Aqueduct A
NH1911010 Nashua, NH 1,625 served
Counties in New Hampshire
Cities in New Hampshire
View all 83 cities →Popular City Comparisons in New Hampshire
Quickly compare major cities in New Hampshire by water quality score and grade.
Frequently Asked Questions
Is tap water in New Hampshire safe to drink?
New Hampshire has an average WaterQ score of 85/100 across 99 public water systems. Safety can vary by city and system, so check your local report for recent violations and contaminants.
How many water systems are in New Hampshire?
WaterQ currently tracks 99 public water systems in New Hampshire.
Where can I compare cities in New Hampshire?
Use the city list below to open detailed reports, or visit the compare tool to benchmark two cities side-by-side on score, grade, and system coverage.