City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#625
Lindsay
County, TX
100 A
#626 Little Valley
County, NY
100 A
#627 Littlerock
County, CA
100 A
#628 Live Oak
County, CA
100 A
#629 Live Oak
County, TX
100 A
#630 Livermore
County, CA
100 A
#631 Livonia
County, LA
100 A
#632 Livonia
County, MI
100 A
#633 Lockeford
County, CA
100 A
#634 Lockport
County, LA
100 A
#635 Locust Grove
County, GA
100 A
#636 Locust Valley
County, NY
100 A
#637 Lod
County, CA
100 A
#638 Lodi
County, OH
100 A
#639 Loganville
County, GA
100 A
#640 Lolita
County, TX
100 A
#641 Loma Linda
County, CA
100 A
#642 Lomita
County, CA
100 A
#643 Longport
County, NJ
100 A
#644 Longville
County, LA
100 A
#645 Lonsdale
County, MN
100 A
#646 Los Alamos
County, CA
100 A
#647 Los Osos
County, CA
100 A
#648 Loxley
County, AL
100 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.