City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9169
South Elgin
County, IL
66 C
#9170 Spencer
County, MA
66 C
#9171 St George City
County, UT
66 C
#9172 St. Joseph
County, TN
66 C
#9173 Stanton
County, NE
66 C
#9174 Swansea
County, IL
66 C
#9175 Theresa
County, WI
66 C
#9176 Thibodaux
County, LA
66 C
#9177 Three Rivers
County, TX
66 C
#9178 Tipton
County, CA
66 C
#9179 Totowa Borough
County, NJ
66 C
#9180 Troup
County, TX
66 C
#9181 Victoria
County, TX
66 C
#9182 Waretown
County, NJ
66 C
#9183 Warrenville
County, IL
66 C
#9184 Waveland
County, MS
66 C
#9185 West
County, MS
66 C
#9186 Wonder Lake
County, IL
66 C
#9187 Wray
County, CO
66 C
#9188 Wyatt
County, WV
66 C
#9189 Yorkville
County, IL
66 C
#9190 Alamance
County, NC
65 C
#9191 Bayfield
County, WI
65 C
#9192 Beardstown
County, IL
65 C
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.