City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#6241
L'Anse
County, MI
85 B
#6242 Lake Worth
County, FL
85 B
#6243 Lame Deer
County, MT
85 B
#6244 Lebanon
County, IL
85 B
#6245 Lebanon
County, PA
85 B
#6246 Lisle
County, IL
85 B
#6247 London
County, OH
85 B
#6248 Loves Park
County, IL
85 B
#6249 Lynn Haven
County, FL
85 B
#6250 Martinsville
County, IL
85 B
#6251 Mauston
County, WI
85 B
#6252 Milan
County, NM
85 B
#6253 Millersville
County, PA
85 B
#6254 Minturn
County, CO
85 B
#6255 Monsey
County, NY
85 B
#6256 Moscow
County, PA
85 B
#6257 Mountain View
County, WY
85 B
#6258 Myerstown
County, PA
85 B
#6259 Myrtle Point
County, OR
85 B
#6260 Nashville
County, IN
85 B
#6261 Needville
County, TX
85 B
#6262 Neoga
County, IL
85 B
#6263 New Madrid
County, MO
85 B
#6264 New Roads
County, LA
85 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.