City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1657
Ludlow
County, VT
98 A
#1658 Lugoff
County, SC
98 A
#1659 Luling
County, TX
98 A
#1660 Lumberton
County, TX
98 A
#1661 Lyles
County, TN
98 A
#1662 Lynnwood
County, WA
98 A
#1663 Madison
County, NC
98 A
#1664 Madison Heights
County, VA
98 A
#1665 Madison Lake
County, MN
98 A
#1666 Madisonville
County, KY
98 A
#1667 Magnolia
County, OH
98 A
#1668 Malad
County, ID
98 A
#1669 Malaga
County, WA
98 A
#1670 Mancelona
County, MI
98 A
#1671 Manchester
County, IA
98 A
#1672 Mansura
County, LA
98 A
#1673 Manvel
County, TX
98 A
#1674 Maple Falls
County, WA
98 A
#1675 Maple Grove
County, MN
98 A
#1676 Marbury
County, AL
98 A
#1677 Marine City
County, MI
98 A
#1678 Mariposa
County, CA
98 A
#1679 Marshall
County, MI
98 A
#1680 Mashantucket
County, CT
98 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.