City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11377
Inverness
County, FL
0 F
#11378 Iota
County, LA
0 F
#11379 Jber
County, AK
0 F
#11380 Jefferson
County, WI
0 F
#11381 Jellico
County, TN
0 F
#11382 Johnsonburg
County, PA
0 F
#11383 Joliet
County, IL
0 F
#11384 Junction
County, TX
0 F
#11385 Juneau
County, AK
0 F
#11386 Keams Canyon
County, AZ
0 F
#11387 Keatchie
County, LA
0 F
#11388 Kellyville
County, OK
0 F
#11389 Kemmerer
County, WY
0 F
#11390 Kenai
County, AK
0 F
#11391 Kenly
County, NC
0 F
#11392 Kennett Square
County, PA
0 F
#11393 Kerens
County, TX
0 F
#11394 Ketchikan
County, AK
0 F
#11395 King City
County, MO
0 F
#11396 Kingfisher
County, OK
0 F
#11397 Kodiak
County, AK
0 F
#11398 Konawa
County, OK
0 F
#11399 Kotzebue
County, AK
0 F
#11400 Krebs
County, OK
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.