City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#721
Purdy
County, MO
100 A
#722 Quapaw
County, OK
100 A
#723 Raceland
County, KY
100 A
#724 Ralph
County, AL
100 A
#725 Ramona
County, CA
100 A
#726 Ramsey
County, MN
100 A
#727 Rancho Santa Fe
County, CA
100 A
#728 Randolph
County, NY
100 A
#729 Randolph
County, AL
100 A
#730 Ranhco Mirage
County, CA
100 A
#731 Rantoul
County, KS
100 A
#732 Reader
County, WV
100 A
#733 Red Wing
County, MN
100 A
#734 Redfield
County, AR
100 A
#735 Redstone Arsenal
County, AL
100 A
#736 Reese
County, MI
100 A
#737 Rensselaer
County, IN
100 A
#738 Rentz
County, GA
100 A
#739 Rialto
County, CA
100 A
#740 Richardson
County, TX
100 A
#741 Richfield
County, WI
100 A
#742 Richfield
County, MN
100 A
#743 Richlands
County, VA
100 A
#744 Richmond
County, MN
100 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.