City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8785
Schaumburg
County, IL
70 C
#8786 Sebastopol
County, MS
70 C
#8787 Senatobia
County, MS
70 C
#8788 Sergeant Bluff
County, IA
70 C
#8789 South Jacksonville
County, IL
70 C
#8790 Sperry
County, OK
70 C
#8791 Spurger
County, TX
70 C
#8792 St Michaels
County, MD
70 C
#8793 St. Augustine
County, FL
70 C
#8794 Stockbridge
County, MA
70 C
#8795 Strafford
County, MO
70 C
#8796 Sunflower
County, MS
70 C
#8797 Sylvan Lake
County, MI
70 C
#8798 Tampa
County, FL
70 C
#8799 Tariffville
County, CT
70 C
#8800 Tiki Island
County, TX
70 C
#8801 Toms River
County, NJ
70 C
#8802 Ulysses
County, KS
70 C
#8803 Urbana
County, OH
70 C
#8804 Walworth
County, NY
70 C
#8805 Waterbury
County, CT
70 C
#8806 Watertown
County, NY
70 C
#8807 Waynesville
County, NC
70 C
#8808 Wellington
County, CO
70 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.