City Water Quality Rankings in New Hampshire
83 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#73
Charlestown
County, NH
69 C
#74 Gilford
County, NH
68 C
#75 Goffstown
County, NH
63 C
#76 Campton
County, NH
61 C
#77 Meredith
County, NH
60 C
#78 Rollinsford
County, NH
54 D
#79 Concord
County, NH
50 D
#80 Alton
County, NH
44 F
#81 Bethlehem
County, NH
0 F
#82 Enfield
County, NH
0 F
#83 Madison
County, NH
0 F
Frequently Asked Questions
How are city water quality rankings calculated in New Hampshire?
WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.
Can I compare two cities in New Hampshire?
Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.
How often does WaterQ refresh city data?
City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.