City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4633
Waco
County, TX
91 A
#4634 Warren
County, AR
91 A
#4635 West Plains
County, MO
91 A
#4636 White Pine
County, TN
91 A
#4637 Whitehouse
County, TX
91 A
#4638 Wise
County, VA
91 A
#4639 Woodville
County, WI
91 A
#4640 Acushnet
County, MA
90 A
#4641 Adrian
County, PA
90 A
#4642 Akron
County, IN
90 A
#4643 Albion
County, IN
90 A
#4644 Alcoa
County, TN
90 A
#4645 Alsip
County, IL
90 A
#4646 Ann Arbor
County, MI
90 A
#4647 Annville
County, PA
90 A
#4648 Appleton
County, MN
90 A
#4649 Arbuckle
County, CA
90 A
#4650 Arlington
County, TX
90 A
#4651 Ashland
County, OH
90 A
#4652 Ashville
County, AL
90 A
#4653 Ashville
County, OH
90 A
#4654 Athens
County, AL
90 A
#4655 Atlanta
County, IL
90 A
#4656 Auburn
County, MI
90 A
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.