City Water Quality Rankings in Oregon
181 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#145
Newberg
County, OR
80 B
#146 Seaside
County, OR
80 B
#147 Cascade Locks
County, OR
79 B
#148 Sweet Home
County, OR
79 B
#149 Banks
County, OR
76 B
#150 Boardman
County, OR
76 B
#151 Carlton
County, OR
74 C
#152 Riddle
County, OR
73 C
#153 Scappoose
County, OR
73 C
#154 Waldport
County, OR
72 C
#155 Gaston
County, OR
71 C
#156 Sheridan
County, OR
70 C
#157 Astoria
County, OR
67 C
#158 Odell
County, OR
67 C
#159 Cannon Beach
County, OR
66 C
#160 Creswell
County, OR
65 C
#161 Monmouth
County, OR
65 C
#162 Silverton
County, OR
64 C
#163 Gold Beach
County, OR
63 C
#164 Clatskanie
County, OR
62 C
#165 Yachats
County, OR
60 C
#166 Brownsville
County, OR
59 D
#167 Reedsport
County, OR
57 D
#168 Amity
County, OR
53 D
Frequently Asked Questions
How are city water quality rankings calculated in Oregon?
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 cities in Oregon?
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.