City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2161
Sweetwater
County, TN
97 A
#2162 Sycamore
County, AL
97 A
#2163 Tacoma
County, WA
97 A
#2164 Talmage
County, UT
97 A
#2165 Taylorsville
County, IN
97 A
#2166 Thorsby
County, AL
97 A
#2167 Trenton
County, MO
97 A
#2168 Trenton
County, OH
97 A
#2169 Tumon
County, GU
97 A
#2170 Vanport
County, PA
97 A
#2171 Verona
County, VA
97 A
#2172 Waterford
County, MI
97 A
#2173 Watertown
County, TN
97 A
#2174 Waterville
County, NY
97 A
#2175 Watford City
County, ND
97 A
#2176 West
County, TX
97 A
#2177 West Columbia
County, TX
97 A
#2178 Wheatland
County, MO
97 A
#2179 Whitefish
County, MT
97 A
#2180 Whitesboro
County, TX
97 A
#2181 Whitestown
County, IN
97 A
#2182 Wilsonville
County, AL
97 A
#2183 Wilsonville
County, OR
97 A
#2184 Winamac
County, IN
97 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.