City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8953
Oakland
County, NJ
68 C
#8954 Owensville
County, IN
68 C
#8955 Oyster Creek
County, TX
68 C
#8956 Palo Pinto
County, TX
68 C
#8957 Patriot
County, IN
68 C
#8958 Peabody
County, MA
68 C
#8959 Pensacola
County, FL
68 C
#8960 Pinehurst
County, TX
68 C
#8961 Plainville
County, KS
68 C
#8962 Porterville
County, MS
68 C
#8963 Quitman
County, LA
68 C
#8964 Richfield
County, PA
68 C
#8965 Romeoville
County, IL
68 C
#8966 San Luis
County, AZ
68 C
#8967 Saugatuck
County, MI
68 C
#8968 Scott City
County, MO
68 C
#8969 Scottsdale
County, AZ
68 C
#8970 Sedan
County, KS
68 C
#8971 Shallowater
County, TX
68 C
#8972 Sharon
County, WI
68 C
#8973 Shirley
County, MA
68 C
#8974 Sioux City
County, IA
68 C
#8975 Somerset
County, MA
68 C
#8976 South Fallsburg
County, NY
68 C
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.