City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10489
Poynor
County, TX
41 F
#10490 Santa Clara
County, NM
41 F
#10491 Stoughton
County, MA
41 F
#10492 Taholah
County, WA
41 F
#10493 Tuba City
County, AZ
41 F
#10494 Yorkville
County, OH
41 F
#10495 Bethesda
County, OH
40 F
#10496 Brookfield
County, IL
40 F
#10497 Cameron
County, TX
40 F
#10498 Central City
County, CO
40 F
#10499 Chino Hills
County, CA
40 F
#10500 Chino Valley
County, AZ
40 F
#10501 Danbury
County, CT
40 F
#10502 East Hanover Township
County, NJ
40 F
#10503 Eden
County, TX
40 F
#10504 Elizabeth
County, WV
40 F
#10505 Jerseyville
County, IL
40 F
#10506 Jonestown
County, TX
40 F
#10507 Karnack
County, TX
40 F
#10508 Kingston
County, OK
40 F
#10509 Ledbetter
County, KY
40 F
#10510 Mammoth
County, AZ
40 F
#10511 Melrose
County, NM
40 F
#10512 Melville
County, LA
40 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.