City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1993
Boyne City
County, MI
97 A
#1994 Bradford
County, OH
97 A
#1995 Bremen
County, OH
97 A
#1996 Brownsville
County, TX
97 A
#1997 Brunswick
County, GA
97 A
#1998 Bryan
County, OH
97 A
#1999 Bunker Hill
County, IN
97 A
#2000 Burlingame
County, KS
97 A
#2001 Bushkill
County, PA
97 A
#2002 Cadillac
County, MI
97 A
#2003 Camarillo
County, CA
97 A
#2004 Camby
County, IN
97 A
#2005 Cartersville
County, GA
97 A
#2006 Chehalis
County, WA
97 A
#2007 Cheyenne
County, WY
97 A
#2008 Christiansburg
County, VA
97 A
#2009 Clemson
County, SC
97 A
#2010 Cleves
County, OH
97 A
#2011 Coburg
County, OR
97 A
#2012 Collierville
County, TN
97 A
#2013 Commiskey
County, IN
97 A
#2014 Cordele
County, GA
97 A
#2015 Cornelius
County, OR
97 A
#2016 Cottage Grove
County, OR
97 A
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.