City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9817
Church Point
County, LA
56 D
#9818 Clio
County, MI
56 D
#9819 Columbus Junction
County, IA
56 D
#9820 Como
County, TX
56 D
#9821 Danese
County, WV
56 D
#9822 Dekalb
County, TX
56 D
#9823 Del Valle
County, TX
56 D
#9824 Dennison
County, OH
56 D
#9825 Diboll
County, TX
56 D
#9826 East Windsor Township
County, NJ
56 D
#9827 Elburn
County, IL
56 D
#9828 Ely
County, MN
56 D
#9829 Fitchburg
County, MA
56 D
#9830 Fruitland Park
County, FL
56 D
#9831 Garber
County, OK
56 D
#9832 Glen
County, MS
56 D
#9833 Glen Rock
County, NJ
56 D
#9834 Glenville
County, NY
56 D
#9835 Harvard
County, IL
56 D
#9836 Jefferson
County, TX
56 D
#9837 Kaunakakai
County, HI
56 D
#9838 Labelle
County, FL
56 D
#9839 Lakewood Ranch
County, FL
56 D
#9840 Lawrenceville
County, VA
56 D
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.