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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#49
Neskowin
County, OR
94 A
#50
Siletz
County, OR
94 A
#51
Stayton
County, OR
94 A
#52
Sublimity
County, OR
94 A
#53
Toledo
County, OR
94 A
#54
Cave Junction
County, OR
93 A
#55
Central Point
County, OR
93 A
#56
Columbia City
County, OR
93 A
#57
Dayton
County, OR
93 A
#58
Depoe Bay
County, OR
93 A
#59
Estacada
County, OR
93 A
#60
Florence
County, OR
93 A
#61
Hillsboro
County, OR
93 A
#62
Hines
County, OR
93 A
#63
Klamath Falls
County, OR
93 A
#64
Madras
County, OR
93 A
#65
Pacific City
County, OR
93 A
#66
Phoenix
County, OR
93 A
#67
Tualatin
County, OR
93 A
#68
Veneta
County, OR
93 A
#69
Warrenton
County, OR
93 A
#70
Welches
County, OR
93 A
#71
Aurora
County, OR
92 A
#72
Coos Bay
County, OR
92 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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