City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2953
La Conner
County, WA
95 A
#2954 La Plata
County, MD
95 A
#2955 Lake Lotawana
County, MO
95 A
#2956 Lakeville
County, OH
95 A
#2957 Lebanon
County, KY
95 A
#2958 Leola
County, PA
95 A
#2959 Lewisburg
County, TN
95 A
#2960 Mammoth Lakes
County, CA
95 A
#2961 Manahawkin
County, NJ
95 A
#2962 Manchester
County, TN
95 A
#2963 Mannington
County, WV
95 A
#2964 Mansfield Center
County, CT
95 A
#2965 Marvell
County, AR
95 A
#2966 Marysville
County, WA
95 A
#2967 Maxwell
County, CA
95 A
#2968 Mayer
County, MN
95 A
#2969 Mckinleyville
County, CA
95 A
#2970 Mckinney
County, TX
95 A
#2971 Mcminnville
County, OR
95 A
#2972 Menasha
County, WI
95 A
#2973 Milbank
County, SD
95 A
#2974 Milwaukee
County, WI
95 A
#2975 Missouri City
County, TX
95 A
#2976 Mohawk
County, NY
95 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.