City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8881
Oyster Creek
County, TX
65 C
#8882 Palo Pinto
County, TX
65 C
#8883 Pelahatchie
County, MS
65 C
#8884 Pinellas Park
County, FL
65 C
#8885 Roanoke
County, IL
65 C
#8886 Robertsdale
County, AL
65 C
#8887 Saint Marys
County, PA
65 C
#8888 Salamanca
County, NY
65 C
#8889 Salisbury
County, NC
65 C
#8890 Saluda
County, SC
65 C
#8891 Sand Springs
County, OK
65 C
#8892 Sherwood
County, WI
65 C
#8893 Slidell
County, LA
65 C
#8894 South Grafton
County, MA
65 C
#8895 Southington
County, CT
65 C
#8896 St Robert
County, MO
65 C
#8897 Stillwater
County, OK
65 C
#8898 Taylorville
County, IL
65 C
#8899 Tewksbury
County, MA
65 C
#8900 Tulare
County, CA
65 C
#8901 Valley View
County, PA
65 C
#8902 Wadesboro
County, NC
65 C
#8903 Warren
County, IL
65 C
#8904 Waterman
County, IL
65 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.