City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#3769
Kansas City
County, MO
93 A
#3770 Kettle Falls
County, WA
93 A
#3771 Kimberling City
County, MO
93 A
#3772 Klamath Falls
County, OR
93 A
#3773 Lake Arthur
County, LA
93 A
#3774 Lake Waukomis
County, MO
93 A
#3775 Lander
County, WY
93 A
#3776 Lawrenceburg
County, TN
93 A
#3777 Leavenworth
County, WA
93 A
#3778 Lebanon
County, OH
93 A
#3779 Lemmon
County, SD
93 A
#3780 Lexington
County, SC
93 A
#3781 Lexington
County, OH
93 A
#3782 Lindale
County, TX
93 A
#3783 Linesville
County, PA
93 A
#3784 Lisbon
County, ND
93 A
#3785 Littleton
County, CO
93 A
#3786 Lolo
County, MT
93 A
#3787 Lomira
County, WI
93 A
#3788 Lumberton
County, NC
93 A
#3789 Madras
County, OR
93 A
#3790 Millbrook
County, AL
93 A
#3791 Millsap
County, TX
93 A
#3792 Milpitas
County, CA
93 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.