City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11401
La Grulla
County, TX
0 F
#11402 La Joya
County, TX
0 F
#11403 La Pryor
County, TX
0 F
#11404 Lake City
County, FL
0 F
#11405 Lakewood
County, IL
0 F
#11406 Langston
County, OK
0 F
#11407 Las Vegas
County, NM
0 F
#11408 Lauderhill
County, FL
0 F
#11409 Laverne
County, OK
0 F
#11410 Le Center
County, MN
0 F
#11411 Leadwood
County, MO
0 F
#11412 Lemars
County, IA
0 F
#11413 Leon
County, IA
0 F
#11414 Leon Valley
County, TX
0 F
#11415 Leroy
County, IL
0 F
#11416 Leroy
County, TX
0 F
#11417 Lewisburg
County, KY
0 F
#11418 Lewisburg
County, WV
0 F
#11419 Lexington
County, GA
0 F
#11420 Ligonier
County, PA
0 F
#11421 Linsday
County, CA
0 F
#11422 Lisman
County, AL
0 F
#11423 Litchfield
County, IL
0 F
#11424 Loleta
County, CA
0 F
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.