City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9793
Pomeroy
County, OH
57 D
#9794 Princeton
County, WI
57 D
#9795 Quartzsite
County, AZ
57 D
#9796 Reedsport
County, OR
57 D
#9797 Sandy Creek
County, NY
57 D
#9798 Sparta
County, MO
57 D
#9799 Spring Hope
County, NC
57 D
#9800 Tequesta
County, FL
57 D
#9801 Tye
County, TX
57 D
#9802 Vine Grove
County, KY
57 D
#9803 Waukegan
County, IL
57 D
#9804 Wyoming
County, IL
57 D
#9805 Alamo
County, TX
56 D
#9806 Albany
County, KY
56 D
#9807 Alva
County, OK
56 D
#9808 Austin
County, CO
56 D
#9809 Avalon
County, NJ
56 D
#9810 Belleville
County, AR
56 D
#9811 Bethany
County, OK
56 D
#9812 Blackstone
County, MA
56 D
#9813 Bloomfield
County, KY
56 D
#9814 Buckatunna
County, MS
56 D
#9815 Bushnell
County, IL
56 D
#9816 Cedar Knolls
County, NJ
56 D
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.