City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5737
Ledgewood
County, NJ
87 B
#5738 Lexington
County, MO
87 B
#5739 Lillington
County, NC
87 B
#5740 Livingston
County, AL
87 B
#5741 Lowell
County, MA
87 B
#5742 Lyndon
County, KS
87 B
#5743 Macon
County, GA
87 B
#5744 Magna
County, UT
87 B
#5745 Magnolia
County, AR
87 B
#5746 Manzanita
County, OR
87 B
#5747 Maringouin
County, LA
87 B
#5748 Marion
County, KY
87 B
#5749 Mays Landing
County, NJ
87 B
#5750 Mccarran
County, NV
87 B
#5751 Mccomb
County, MS
87 B
#5752 Mckenzie
County, AL
87 B
#5753 Merryville
County, LA
87 B
#5754 Middleville
County, MI
87 B
#5755 Millbury
County, MA
87 B
#5756 Milliken
County, CO
87 B
#5757 Millville
County, UT
87 B
#5758 Monticello
County, WI
87 B
#5759 Moundsville
County, WV
87 B
#5760 N. Wilkesboro
County, NC
87 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.