City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5785
Reynoldsville
County, WV
87 B
#5786 Round Lake
County, IL
87 B
#5787 Salemburg
County, NC
87 B
#5788 Sandy Hook
County, KY
87 B
#5789 Scottsburg
County, IN
87 B
#5790 Seadrift
County, TX
87 B
#5791 Selmer
County, TN
87 B
#5792 Shelburn
County, IN
87 B
#5793 Shelby
County, NC
87 B
#5794 Silt
County, CO
87 B
#5795 Spring Creek
County, NV
87 B
#5796 St Helens
County, OR
87 B
#5797 St Marys
County, KS
87 B
#5798 Stockton
County, CA
87 B
#5799 Stonewall
County, OK
87 B
#5800 Sudbury
County, MA
87 B
#5801 Summit Hill
County, PA
87 B
#5802 Sunman
County, IN
87 B
#5803 Sweeny
County, TX
87 B
#5804 Thomasboro
County, IL
87 B
#5805 Town Of Lake Clark Shores
County, FL
87 B
#5806 Trotwood
County, OH
87 B
#5807 Tulalip
County, WA
87 B
#5808 Tulare
County, CA
87 B
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.