City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4129
Lena
County, LA
92 A
#4130 Lenoir City
County, TN
92 A
#4131 Lexington
County, KY
92 A
#4132 Lexington
County, MI
92 A
#4133 Lexington
County, NC
92 A
#4134 Lihue
County, HI
92 A
#4135 Limon
County, CO
92 A
#4136 Lineville
County, AL
92 A
#4137 Litchfield
County, MN
92 A
#4138 Little Rock
County, AR
92 A
#4139 Littleton
County, NH
92 A
#4140 Livermore
County, KY
92 A
#4141 Lodi
County, CA
92 A
#4142 Logan
County, NM
92 A
#4143 Long Beach
County, CA
92 A
#4144 Lorain
County, OH
92 A
#4145 Louisville
County, GA
92 A
#4146 Lusk
County, WY
92 A
#4147 Lynden
County, WA
92 A
#4148 Lyons
County, KS
92 A
#4149 Madison
County, MN
92 A
#4150 Mahnomen
County, MN
92 A
#4151 Malta
County, NY
92 A
#4152 Manalapan
County, NJ
92 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.