City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9745
St. Charles
County, IL
58 D
#9746 Stratford
County, OK
58 D
#9747 Sun Valley
County, ID
58 D
#9748 Temple Terrace
County, FL
58 D
#9749 Trumansburg
County, NY
58 D
#9750 Turners Falls
County, MA
58 D
#9751 Twin Rocks
County, PA
58 D
#9752 Unadilla
County, GA
58 D
#9753 West Branch
County, IA
58 D
#9754 West Point
County, VA
58 D
#9755 Wichita Falls
County, TX
58 D
#9756 Winchendon
County, MA
58 D
#9757 Woodstock
County, IL
58 D
#9758 Yellville
County, AR
58 D
#9759 Zeigler
County, IL
58 D
#9760 Altamonte Springs
County, FL
57 D
#9761 Apopka
County, FL
57 D
#9762 Barneveld
County, WI
57 D
#9763 Bement
County, IL
57 D
#9764 Birdsboro
County, PA
57 D
#9765 Brockton
County, MA
57 D
#9766 Carbon
County, IN
57 D
#9767 Carlisle
County, IA
57 D
#9768 Crystal River
County, FL
57 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.