City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1609
Kersey
County, CO
98 A
#1610 Kershaw
County, SC
98 A
#1611 Ketchum
County, ID
98 A
#1612 Kimball
County, SD
98 A
#1613 Kindred
County, ND
98 A
#1614 Kingston
County, NY
98 A
#1615 Kokomo
County, IN
98 A
#1616 La Junta
County, CO
98 A
#1617 La Verne
County, CA
98 A
#1618 Lacey
County, WA
98 A
#1619 Lacrescent
County, MN
98 A
#1620 Lafayette
County, LA
98 A
#1621 Laguna Beach
County, CA
98 A
#1622 Lake Forest Park
County, WA
98 A
#1623 Lake Geneva
County, WI
98 A
#1624 Lake Kiowa
County, TX
98 A
#1625 Lake Worth
County, TX
98 A
#1626 Lakehurst
County, NJ
98 A
#1627 Lancaster
County, OH
98 A
#1628 Laramie
County, WY
98 A
#1629 Larimore
County, ND
98 A
#1630 Latta
County, SC
98 A
#1631 Lavale
County, MD
98 A
#1632 Lavalette
County, WV
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.