WaterQ

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.

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