City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2929
Greensboro
County, NC
95 A
#2930 Greenwood Village
County, CO
95 A
#2931 Harbor
County, OR
95 A
#2932 Haworth
County, NJ
95 A
#2933 Heath
County, TX
95 A
#2934 Herlong
County, CA
95 A
#2935 Hildebran
County, NC
95 A
#2936 Hillsville
County, VA
95 A
#2937 Hooksett
County, NH
95 A
#2938 Hope Hull
County, AL
95 A
#2939 Houston
County, TX
95 A
#2940 Huntington Park
County, CA
95 A
#2941 Inverness
County, CA
95 A
#2942 Ion
County, WA
95 A
#2943 Iron Mountain
County, MI
95 A
#2944 Jackson
County, GA
95 A
#2945 Jackson
County, MO
95 A
#2946 Jackson
County, TN
95 A
#2947 Jurupa Valley
County, CA
95 A
#2948 Kenmare
County, ND
95 A
#2949 Kent
County, WA
95 A
#2950 Kill Devil Hills
County, NC
95 A
#2951 Kimberly
County, ID
95 A
#2952 Kutztown
County, PA
95 A
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.