City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#6097
Springdale
County, PA
86 B
#6098 Springfield
County, MA
86 B
#6099 Springfield
County, VT
86 B
#6100 Springhill
County, LA
86 B
#6101 St John
County, KS
86 B
#6102 St. Louis
County, MI
86 B
#6103 St. Marys
County, GA
86 B
#6104 Stanfield
County, OR
86 B
#6105 Star City
County, WV
86 B
#6106 Stephens
County, AR
86 B
#6107 Stuart
County, IA
86 B
#6108 Sulphur
County, OK
86 B
#6109 Susank
County, KS
86 B
#6110 Swartz Creek
County, MI
86 B
#6111 Symsonia
County, KY
86 B
#6112 Tappahannock
County, VA
86 B
#6113 Taylorsville
County, KY
86 B
#6114 Tazewell
County, VA
86 B
#6115 Tennessee Colony
County, TX
86 B
#6116 The Dalles
County, OR
86 B
#6117 Thurmont
County, MD
86 B
#6118 Tom Bean
County, TX
86 B
#6119 Torrance
County, CA
86 B
#6120 Twin Falls
County, ID
86 B
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.