City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8521
Mobile
County, AL
72 C
#8522 Montgomery
County, PA
72 C
#8523 Montrose
County, MI
72 C
#8524 Moscow
County, TX
72 C
#8525 Mt Holly Springs
County, PA
72 C
#8526 Newark
County, NJ
72 C
#8527 Norris City
County, IL
72 C
#8528 North Carrollton
County, MS
72 C
#8529 North Dighton
County, MA
72 C
#8530 North Liberty
County, IA
72 C
#8531 Olathe
County, CO
72 C
#8532 Onalaska
County, TX
72 C
#8533 Orange Cove
County, CA
72 C
#8534 Pelican Rapids
County, MN
72 C
#8535 Pinebluff
County, NC
72 C
#8536 Pittsburg
County, IL
72 C
#8537 Port Gibson
County, MS
72 C
#8538 Port St Joe
County, FL
72 C
#8539 Portageville
County, MO
72 C
#8540 Prescott
County, AR
72 C
#8541 Provincetown
County, MA
72 C
#8542 Ringling
County, OK
72 C
#8543 Salina
County, UT
72 C
#8544 Sallis
County, MS
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.