City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8641
Wellington
County, FL
68 C
#8642 Wellsville
County, UT
68 C
#8643 West
County, MS
68 C
#8644 Weston
County, CT
68 C
#8645 Westworth Village
County, TX
68 C
#8646 Whitinsville
County, MA
68 C
#8647 Wickliffe
County, KY
68 C
#8648 Williamson
County, NY
68 C
#8649 Winnetka
County, IL
68 C
#8650 Woodland
County, CO
68 C
#8651 Woodstown
County, NJ
68 C
#8652 Wynnewood
County, OK
68 C
#8653 Yazoo
County, MS
68 C
#8654 Astoria
County, OR
67 C
#8655 Bellaire
County, MI
67 C
#8656 Bellefonte
County, PA
67 C
#8657 Bucyrus
County, OH
67 C
#8658 Camp Hill
County, PA
67 C
#8659 Canton
County, TX
67 C
#8660 Chandler Heights
County, AZ
67 C
#8661 Chatsworth
County, IL
67 C
#8662 Chico
County, CA
67 C
#8663 Clarksburg
County, WV
67 C
#8664 Coal Valley
County, IL
67 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.