City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4849
Laurel
County, MT
90 A
#4850 Lavergne
County, TN
90 A
#4851 Leander
County, TX
90 A
#4852 Leechburg
County, PA
90 A
#4853 Lester Prairie
County, MN
90 A
#4854 Levittown
County, PA
90 A
#4855 Lexington
County, MA
90 A
#4856 Lexington
County, MN
90 A
#4857 Linden
County, MI
90 A
#4858 Linden
County, NC
90 A
#4859 Linton
County, ND
90 A
#4860 Little Hocking
County, OH
90 A
#4861 Littlestown
County, PA
90 A
#4862 Llano
County, TX
90 A
#4863 Loachapoka
County, AL
90 A
#4864 Long Beach
County, IN
90 A
#4865 Long Neck
County, DE
90 A
#4866 Long Prairie
County, MN
90 A
#4867 Lordstown
County, OH
90 A
#4868 Louisville
County, MS
90 A
#4869 Lubec
County, ME
90 A
#4870 Luray
County, VA
90 A
#4871 Lusby
County, MD
90 A
#4872 Macungie
County, PA
90 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.