City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2521
Long Beach
County, WA
96 A
#2522 Loon Lake
County, WA
96 A
#2523 Loretto
County, TN
96 A
#2524 Louisville
County, OH
96 A
#2525 Loveland
County, CO
96 A
#2526 Lovell
County, WY
96 A
#2527 Lower Lake
County, CA
96 A
#2528 Luling
County, LA
96 A
#2529 Luxemburg
County, WI
96 A
#2530 Lynchburg
County, VA
96 A
#2531 Mackinaw
County, IL
96 A
#2532 Macon
County, IL
96 A
#2533 Madelia
County, MN
96 A
#2534 Madison
County, NY
96 A
#2535 Maiden
County, NC
96 A
#2536 Malone
County, NY
96 A
#2537 Malta
County, MT
96 A
#2538 Manati
County, PR
96 A
#2539 Manchester
County, WA
96 A
#2540 Manhattan Beach
County, CA
96 A
#2541 Mantador
County, ND
96 A
#2542 Maple Lake
County, MN
96 A
#2543 Maple Plain
County, MN
96 A
#2544 Margaret
County, AL
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.