City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2473
Independence
County, OR
96 A
#2474 Intercourse
County, PA
96 A
#2475 International Falls
County, MN
96 A
#2476 Iona
County, ID
96 A
#2477 Ionia
County, MI
96 A
#2478 Island
County, KY
96 A
#2479 Isle Of Wight
County, VA
96 A
#2480 Jackson
County, MN
96 A
#2481 Jamestown
County, CA
96 A
#2482 Jamison
County, PA
96 A
#2483 Jefferson
County, LA
96 A
#2484 Johnson City
County, NY
96 A
#2485 Johnstown
County, OH
96 A
#2486 Kalispell
County, MT
96 A
#2487 Kenton
County, TN
96 A
#2488 Kentwood
County, MI
96 A
#2489 Kenyon
County, MN
96 A
#2490 Kinderhook
County, NY
96 A
#2491 Knollwood
County, TX
96 A
#2492 Knottsville
County, KY
96 A
#2493 Kouts
County, IN
96 A
#2494 Krum
County, TX
96 A
#2495 Kuna
County, ID
96 A
#2496 La Crosse
County, WI
96 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.