City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9601
Lewiston
County, UT
60 C
#9602 Longwood
County, FL
60 C
#9603 Manti
County, UT
60 C
#9604 Mapleton
County, UT
60 C
#9605 Marianna
County, AR
60 C
#9606 Mars Hill
County, NC
60 C
#9607 Mont Belvieu
County, TX
60 C
#9608 Muldrow
County, OK
60 C
#9609 Munday
County, TX
60 C
#9610 New Orleans
County, LA
60 C
#9611 Oak Park
County, IL
60 C
#9612 Olmito
County, TX
60 C
#9613 Petersburg
County, TX
60 C
#9614 Ramseur
County, NC
60 C
#9615 Ruckersville
County, VA
60 C
#9616 Saluda
County, NC
60 C
#9617 Santaquin
County, UT
60 C
#9618 Sarepta
County, LA
60 C
#9619 Selinsgrove
County, PA
60 C
#9620 Signal Hill
County, CA
60 C
#9621 Skaneateles
County, NY
60 C
#9622 Somerset
County, KY
60 C
#9623 Southwick
County, MA
60 C
#9624 Stanton
County, KY
60 C
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.