City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#6745
Rockwell City
County, IA
83 B
#6746 Rosepine
County, LA
83 B
#6747 Rural Valley
County, PA
83 B
#6748 Rush City
County, MN
83 B
#6749 Salyersville
County, KY
83 B
#6750 Sandwich
County, IL
83 B
#6751 Sea Ranch
County, CA
83 B
#6752 Senoia
County, GA
83 B
#6753 Simsboro
County, LA
83 B
#6754 Sour Lake
County, TX
83 B
#6755 South Holland
County, IL
83 B
#6756 South Lake Tahoe
County, CA
83 B
#6757 Spotsylvania
County, VA
83 B
#6758 Spring Hill
County, KS
83 B
#6759 St. Croix Falls
County, WI
83 B
#6760 State College
County, PA
83 B
#6761 Stickney
County, IL
83 B
#6762 Stringer
County, MS
83 B
#6763 Summersville
County, WV
83 B
#6764 Superior
County, WI
83 B
#6765 Talmage
County, CA
83 B
#6766 Tiptonville
County, TN
83 B
#6767 Tolar
County, TX
83 B
#6768 Tomball
County, TX
83 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.