City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11233
Kings Island
County, OH
0 F
#11234 Kodiak
County, AK
0 F
#11235 Konawa
County, OK
0 F
#11236 Kotzebue
County, AK
0 F
#11237 Krebs
County, OK
0 F
#11238 La Grulla
County, TX
0 F
#11239 La Joya
County, TX
0 F
#11240 La Pryor
County, TX
0 F
#11241 Lake City
County, FL
0 F
#11242 Langston
County, OK
0 F
#11243 Laredo
County, TX
0 F
#11244 Las Vegas
County, NM
0 F
#11245 Lauderhill
County, FL
0 F
#11246 Laverne
County, OK
0 F
#11247 Lawrenceville
County, IL
0 F
#11248 Leadwood
County, MO
0 F
#11249 Lemars
County, IA
0 F
#11250 Leon
County, IA
0 F
#11251 Leon Valley
County, TX
0 F
#11252 Leroy
County, IL
0 F
#11253 Leroy
County, TX
0 F
#11254 Lewisburg
County, KY
0 F
#11255 Lewisburg
County, WV
0 F
#11256 Lexington
County, GA
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.