City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8425
Summit
County, IL
73 C
#8426 Sun Lakes
County, AZ
73 C
#8427 Washington
County, MS
73 C
#8428 Weston
County, MO
73 C
#8429 Winter Haven
County, FL
73 C
#8430 Addison
County, IL
72 C
#8431 Adrian
County, MO
72 C
#8432 Ajo
County, AZ
72 C
#8433 Almo
County, KY
72 C
#8434 Alton
County, IA
72 C
#8435 Ambler
County, PA
72 C
#8436 Ardmore
County, TN
72 C
#8437 Atlantic Beach
County, FL
72 C
#8438 Avondale
County, PA
72 C
#8439 Bannockburn
County, IL
72 C
#8440 Bargersville
County, IN
72 C
#8441 Barnegat
County, NJ
72 C
#8442 Bay Springs
County, MS
72 C
#8443 Bellville
County, TX
72 C
#8444 Bellwood
County, PA
72 C
#8445 Blackfoot
County, ID
72 C
#8446 Blairsville
County, GA
72 C
#8447 Bolivia
County, NC
72 C
#8448 Braggs
County, OK
72 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.