City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#6913
Lemont
County, IL
82 B
#6914 Lewistown
County, IL
82 B
#6915 London
County, AR
82 B
#6916 Lorena
County, TX
82 B
#6917 Loudonville
County, OH
82 B
#6918 Lumpkin
County, GA
82 B
#6919 Lynn
County, AL
82 B
#6920 Macon
County, MS
82 B
#6921 Manawa
County, WI
82 B
#6922 Manchester
County, NJ
82 B
#6923 Mangilao
County, GU
82 B
#6924 Manila
County, AR
82 B
#6925 Manistique
County, MI
82 B
#6926 Manito
County, IL
82 B
#6927 Marksville
County, LA
82 B
#6928 Marshall
County, MO
82 B
#6929 Marshfield
County, MA
82 B
#6930 Mayhill
County, NM
82 B
#6931 Mazomanie
County, WI
82 B
#6932 Mchenry
County, MS
82 B
#6933 Mckee
County, KY
82 B
#6934 Middletown
County, CT
82 B
#6935 Middletown
County, VA
82 B
#6936 Milford
County, NE
82 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.