City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5953
Holly Grove
County, AR
86 B
#5954 Holmen
County, WI
86 B
#5955 Holton
County, MI
86 B
#5956 Homer
County, IL
86 B
#5957 Hornell
County, NY
86 B
#5958 Hoyt Lakes
County, MN
86 B
#5959 Huber Heights
County, OH
86 B
#5960 Hungry Horse
County, MT
86 B
#5961 Hurley
County, WI
86 B
#5962 Independence
County, KS
86 B
#5963 Indianola
County, IA
86 B
#5964 Iola
County, KS
86 B
#5965 Irondale
County, AL
86 B
#5966 Iva
County, SC
86 B
#5967 Jacksboro
County, TX
86 B
#5968 Jarrell
County, TX
86 B
#5969 Jefferson
County, OH
86 B
#5970 Jefferson City
County, MO
86 B
#5971 Jericho
County, VT
86 B
#5972 Jonesville
County, VA
86 B
#5973 Kennard
County, NE
86 B
#5974 Kingsford Heights
County, IN
86 B
#5975 Kingston
County, WA
86 B
#5976 Kosciusko
County, MS
86 B
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.