City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11017
Haines
County, AK
12 F
#11018 Hopatcong
County, NJ
12 F
#11019 Indiantown
County, FL
12 F
#11020 Laredo
County, TX
12 F
#11021 Lonoke
County, AR
12 F
#11022 Princeton
County, NC
12 F
#11023 Ridgway
County, CO
12 F
#11024 Bernice
County, LA
11 F
#11025 Crest Hill
County, IL
11 F
#11026 Durham
County, CT
11 F
#11027 Harrisville
County, RI
11 F
#11028 Joaquin
County, TX
11 F
#11029 Lamoni
County, IA
11 F
#11030 Macy
County, NE
11 F
#11031 Mount Storm
County, WV
11 F
#11032 Nantucket
County, MA
11 F
#11033 Naranjito
County, PR
11 F
#11034 Okemah
County, OK
11 F
#11035 South River
County, NJ
11 F
#11036 Sylva
County, NC
11 F
#11037 Hobe Sound
County, FL
10 F
#11038 Mexia
County, AL
10 F
#11039 Meyersdale
County, PA
10 F
#11040 North Adams
County, MA
10 F
Frequently Asked Questions
How are city water quality rankings calculated?
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 US cities directly?
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.