City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2569
Middlefield
County, OH
96 A
#2570 Middleton
County, ID
96 A
#2571 Milford
County, NH
96 A
#2572 Mill City
County, OR
96 A
#2573 Millen
County, GA
96 A
#2574 Miller
County, SD
96 A
#2575 Mineola
County, NY
96 A
#2576 Mishicot
County, WI
96 A
#2577 Mokane
County, MO
96 A
#2578 Monahans
County, TX
96 A
#2579 Monroe
County, WA
96 A
#2580 Monrovia
County, CA
96 A
#2581 Montague
County, MI
96 A
#2582 Montgomery
County, AL
96 A
#2583 Montgomery City
County, MO
96 A
#2584 Montrose
County, MN
96 A
#2585 Moorhead
County, MN
96 A
#2586 Morenci
County, MI
96 A
#2587 Morgann Hill
County, CA
96 A
#2588 Morganza
County, LA
96 A
#2589 Morristown
County, TN
96 A
#2590 Morrisville
County, VT
96 A
#2591 Morrow
County, LA
96 A
#2592 Moscow
County, ID
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.