WaterQ

City Water Quality Rankings in Oregon

180 cities ranked by drinking water quality.

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Popular city water quality comparisons

Gearhart, OR vs Happy Valley, OR Compare → Lakeside, OR vs Mt Hood, OR Compare → Ophir, OR vs Oregon City, OR Compare → Pleasant Hill, OR vs West Linn, OR Compare →

Trending Cities

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#25
Jacksonville
County, OR
97 A
#26
Keizer
County, OR
97 A
#27
Milton-Freewater
County, OR
97 A
#28
Nehalem
County, OR
97 A
#29
Wilsonville
County, OR
97 A
#30
Eugene
County, OR
96 A
#31
Independence
County, OR
96 A
#32
Medford
County, OR
96 A
#33
Mill City
County, OR
96 A
#34
Odell
County, OR
96 A
#35
Sisters
County, OR
96 A
#36
Tigard
County, OR
96 A
#37
Wood Village
County, OR
96 A
#38
Albany
County, OR
95 A
#39
Aumsville
County, OR
95 A
#40
Elgin
County, OR
95 A
#41
Harbor
County, OR
95 A
#42
Mcminnville
County, OR
95 A
#43
Philomath
County, OR
95 A
#44
Pilot Rock
County, OR
95 A
#45
Sherwood
County, OR
95 A
#46
Woodburn
County, OR
95 A
#47
Heppner
County, OR
94 A
#48
Hermiston
County, OR
94 A

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.

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