City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11425
Richton Park
County, IL
0 F
#11426 Richwood
County, OH
0 F
#11427 Richwood
County, WV
0 F
#11428 Ridgewood
County, NJ
0 F
#11429 Riesel
County, TX
0 F
#11430 Ritzville
County, WA
0 F
#11431 Riverside
County, TX
0 F
#11432 Robbins
County, IL
0 F
#11433 Robbins
County, NC
0 F
#11434 Roma
County, TX
0 F
#11435 Ronceverte
County, WV
0 F
#11436 Roslyn Heights
County, NY
0 F
#11437 Rosston
County, AR
0 F
#11438 Rotan
County, TX
0 F
#11439 Royalton
County, IL
0 F
#11440 Runaway Bay
County, TX
0 F
#11441 Salem
County, WV
0 F
#11442 Salina
County, OK
0 F
#11443 Salmon
County, ID
0 F
#11444 San Diego
County, TX
0 F
#11445 San Rafael
County, NM
0 F
#11446 Santa Rosa
County, TX
0 F
#11447 Sargent
County, TX
0 F
#11448 Satanta
County, KS
0 F
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.