City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9721
Mine Hill
County, NJ
58 D
#9722 Mission
County, TX
58 D
#9723 Monticello
County, UT
58 D
#9724 New Brunswick
County, NJ
58 D
#9725 New Freedom
County, PA
58 D
#9726 Olney
County, TX
58 D
#9727 Orange
County, TX
58 D
#9728 Orange City
County, FL
58 D
#9729 Orion
County, IL
58 D
#9730 Palmer
County, MA
58 D
#9731 Parker
County, FL
58 D
#9732 Pineland
County, TX
58 D
#9733 Red Bud
County, IL
58 D
#9734 Richland Springs
County, TX
58 D
#9735 Rifle
County, CO
58 D
#9736 Robstown
County, TX
58 D
#9737 Rockdale
County, IL
58 D
#9738 Rockwood
County, PA
58 D
#9739 Rush Springs
County, OK
58 D
#9740 Sallisaw
County, OK
58 D
#9741 Sandy Lake
County, PA
58 D
#9742 Saucier
County, MS
58 D
#9743 Shepherd
County, TX
58 D
#9744 Sierra Vista
County, AZ
58 D
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.