WaterQ

City Water Quality Rankings in Oregon

180 cities ranked by drinking water quality.

Popular city water quality comparisons

Trending Cities

#169
Riddle
County, OR
66 C
#170
Molalla
County, OR
65 C
#171
Gold Beach
County, OR
63 C
#172
Rainier
County, OR
62 C
#173
Colton
County, OR
58 D
#174
Reedsport
County, OR
57 D
#175
Yachats
County, OR
56 D
#176
Brownsville
County, OR
55 D
#177
Prineville
County, OR
30 F
#178
Lyons
County, OR
23 F
#179
Gladstone
County, OR
0 F
#180
Warm Springs
County, OR
0 F

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.

Explore More Water Quality Data