WaterQ

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.

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