City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4321
South Bend
County, IN
92 A
#4322 South Houston
County, TX
92 A
#4323 South Lebanon
County, OH
92 A
#4324 Southlake
County, TX
92 A
#4325 Speculator
County, NY
92 A
#4326 Spirit Lake
County, ID
92 A
#4327 Spring Lake Heights
County, NJ
92 A
#4328 Spring Lake Park
County, MN
92 A
#4329 Spring Mills
County, PA
92 A
#4330 Spring Park
County, MN
92 A
#4331 Springville
County, CA
92 A
#4332 St Joe
County, AR
92 A
#4333 St Matthews
County, SC
92 A
#4334 St. John
County, IN
92 A
#4335 Stephens City
County, VA
92 A
#4336 Stockbridge
County, MI
92 A
#4337 Strasburg
County, PA
92 A
#4338 Strawberry Point
County, IA
92 A
#4339 Sullivan
County, MO
92 A
#4340 Summerdale
County, AL
92 A
#4341 Summertown
County, TN
92 A
#4342 Sumrall
County, MS
92 A
#4343 Sunnyvale
County, CA
92 A
#4344 Surfside
County, FL
92 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.