City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8857
Greenville
County, NY
65 C
#8858 Griggsville
County, IL
65 C
#8859 High Point
County, NC
65 C
#8860 Hooks
County, TX
65 C
#8861 Lakewood
County, IL
65 C
#8862 Lawrenceville
County, NJ
65 C
#8863 Manchester
County, GA
65 C
#8864 Mannford
County, OK
65 C
#8865 Marquez
County, TX
65 C
#8866 Mchenry
County, IL
65 C
#8867 Mcleansboro
County, IL
65 C
#8868 Merkel
County, TX
65 C
#8869 Mexia
County, TX
65 C
#8870 Mineral Wells
County, TX
65 C
#8871 Monmouth
County, OR
65 C
#8872 Montpelier
County, OH
65 C
#8873 Naches
County, WA
65 C
#8874 Naples
County, FL
65 C
#8875 Nashville
County, IL
65 C
#8876 Neosho
County, MO
65 C
#8877 Northport
County, AL
65 C
#8878 Oak Brook
County, IL
65 C
#8879 Oak Grove
County, MO
65 C
#8880 Oskaloosa
County, KS
65 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.