City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1273
Palmyra
County, VA
99 A
#1274 Portsmouth
County, OH
99 A
#1275 Powhatan
County, VA
99 A
#1276 Prince Frederick
County, MD
99 A
#1277 Renton
County, WA
99 A
#1278 Roberta
County, GA
99 A
#1279 Rochester
County, WA
99 A
#1280 Rock Island
County, WA
99 A
#1281 Rock Springs
County, WY
99 A
#1282 Sammamish
County, WA
99 A
#1283 Shawano
County, WI
99 A
#1284 St Joseph
County, MO
99 A
#1285 Stevensville
County, MD
99 A
#1286 Stormville
County, NY
99 A
#1287 Sugar Land
County, TX
99 A
#1288 Sunriver
County, OR
99 A
#1289 Tallassee
County, AL
99 A
#1290 Tenino
County, WA
99 A
#1291 Toledo
County, WA
99 A
#1292 Vallejo
County, CA
99 A
#1293 Walkersville
County, MD
99 A
#1294 Walla Walla
County, WA
99 A
#1295 Wallis
County, TX
99 A
#1296 Wallkill
County, NY
99 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.