City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#6937
Monson
County, MA
82 B
#6938 Morris
County, MN
82 B
#6939 Mortons Gap
County, KY
82 B
#6940 Muldraugh
County, KY
82 B
#6941 National Park
County, NJ
82 B
#6942 Neches
County, TX
82 B
#6943 New Hampton
County, IA
82 B
#6944 Newport
County, VT
82 B
#6945 Nocona
County, TX
82 B
#6946 North Fond Du Lac
County, WI
82 B
#6947 Northport
County, NY
82 B
#6948 O Fallon
County, MO
82 B
#6949 Oak Hill
County, OH
82 B
#6950 Oakes
County, ND
82 B
#6951 Oakwood
County, IL
82 B
#6952 Odessa
County, MO
82 B
#6953 Ogden
County, IA
82 B
#6954 Oro Valley
County, AZ
82 B
#6955 Osseo
County, MN
82 B
#6956 Owego
County, NY
82 B
#6957 Palo
County, IA
82 B
#6958 Paso Robles
County, CA
82 B
#6959 Pennsauken
County, NJ
82 B
#6960 Petersburg
County, WV
82 B
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.