City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9841
Lone Grove
County, OK
56 D
#9842 Madison
County, GA
56 D
#9843 Marengo
County, IA
56 D
#9844 Marshallville
County, GA
56 D
#9845 Maynard
County, MA
56 D
#9846 Meredith
County, NH
56 D
#9847 Mt Vernon
County, KY
56 D
#9848 Nashua
County, IA
56 D
#9849 Neosho
County, MO
56 D
#9850 Pontiac
County, IL
56 D
#9851 Post
County, TX
56 D
#9852 Prescott
County, AZ
56 D
#9853 Raton
County, NM
56 D
#9854 Rich Square
County, NC
56 D
#9855 Rockingham
County, NC
56 D
#9856 Sandersville
County, MS
56 D
#9857 Simmesport
County, LA
56 D
#9858 Snowmass Village
County, CO
56 D
#9859 Sonora
County, TX
56 D
#9860 Taft
County, TX
56 D
#9861 Tompkinsville
County, KY
56 D
#9862 Wallington
County, NJ
56 D
#9863 Ward
County, AR
56 D
#9864 Warminster
County, PA
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.