City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5977
Lagrange Park
County, IL
86 B
#5978 Lake Park
County, IA
86 B
#5979 Lancaster
County, MA
86 B
#5980 Las Vegas
County, NV
86 B
#5981 Lebanon Junction
County, KY
86 B
#5982 Lincoln
County, NH
86 B
#5983 Lincolnville
County, SC
86 B
#5984 Little Egg Harbor
County, NJ
86 B
#5985 Littleton
County, IL
86 B
#5986 Loyal
County, WI
86 B
#5987 Lyndhurst
County, NJ
86 B
#5988 Lynnfield
County, MA
86 B
#5989 Lynwood
County, CA
86 B
#5990 Lyon Station
County, PA
86 B
#5991 Malad City
County, ID
86 B
#5992 Mamaroneck
County, NY
86 B
#5993 Manchester
County, CT
86 B
#5994 Marcellus
County, MI
86 B
#5995 Maricao
County, PR
86 B
#5996 Marquette
County, MI
86 B
#5997 Marshville
County, NC
86 B
#5998 Mary Esther
County, FL
86 B
#5999 Mattawan
County, MI
86 B
#6000 Mayslick
County, KY
86 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.