City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#6505
Mcewen
County, TN
84 B
#6506 Meigs
County, GA
84 B
#6507 Midway
County, KY
84 B
#6508 Miner
County, MO
84 B
#6509 Monticello
County, KY
84 B
#6510 Montpelier
County, OH
84 B
#6511 Morehead City
County, NC
84 B
#6512 Moundridge
County, KS
84 B
#6513 Mount Vernon
County, IA
84 B
#6514 Mundelein
County, IL
84 B
#6515 Murfreesboro
County, NC
84 B
#6516 Muscatine
County, IA
84 B
#6517 Nashville
County, AR
84 B
#6518 Neptune Beach
County, FL
84 B
#6519 Ness City
County, KS
84 B
#6520 Niantic
County, CT
84 B
#6521 Niceville
County, FL
84 B
#6522 North Riverside
County, IL
84 B
#6523 Oakland
County, FL
84 B
#6524 Ocean Beach
County, NY
84 B
#6525 Olathe
County, KS
84 B
#6526 Old Lyme
County, CT
84 B
#6527 Olive Branch
County, MS
84 B
#6528 Olympic Valley
County, CA
84 B
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.