City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5449
Leonardtown
County, MD
88 B
#5450 Liberal
County, KS
88 B
#5451 Lincoln
County, AL
88 B
#5452 Lincoln
County, AR
88 B
#5453 Linton
County, IN
88 B
#5454 Lititz
County, PA
88 B
#5455 Little Falls
County, NY
88 B
#5456 Livermore Falls
County, ME
88 B
#5457 Long Lake
County, MN
88 B
#5458 Lowell
County, OR
88 B
#5459 Luverne
County, MN
88 B
#5460 Lynnville
County, TN
88 B
#5461 Macomb
County, MI
88 B
#5462 Mahtomedi
County, MN
88 B
#5463 Malvern
County, AR
88 B
#5464 Manassas Park
County, VA
88 B
#5465 Manchester
County, MD
88 B
#5466 Mantachie
County, MS
88 B
#5467 Mantua
County, NJ
88 B
#5468 Marathon
County, NY
88 B
#5469 Marceline
County, MO
88 B
#5470 Marlton
County, NJ
88 B
#5471 Mars
County, PA
88 B
#5472 Marshall
County, AR
88 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.