WaterQ

City Water Quality Rankings in Oregon

181 cities ranked by drinking water quality.

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Popular city water quality comparisons

Happy Valley, OR vs Lakeside, OR Compare → Oregon City, OR vs Pleasant Hill, OR Compare → West Linn, OR vs Winston, OR Compare → Ophir, OR vs Sunriver, OR Compare →

Trending Cities

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#49
Central Point
County, OR
93 A
#50
Columbia City
County, OR
93 A
#51
Dayton
County, OR
93 A
#52
Estacada
County, OR
93 A
#53
Florence
County, OR
93 A
#54
Harbor
County, OR
93 A
#55
Heppner
County, OR
93 A
#56
Hillsboro
County, OR
93 A
#57
Madras
County, OR
93 A
#58
Neskowin
County, OR
93 A
#59
Pacific City
County, OR
93 A
#60
Phoenix
County, OR
93 A
#61
Tualatin
County, OR
93 A
#62
Turner
County, OR
93 A
#63
Veneta
County, OR
93 A
#64
Warrenton
County, OR
93 A
#65
Welches
County, OR
93 A
#66
Burns
County, OR
92 A
#67
Coos Bay
County, OR
92 A
#68
Hines
County, OR
92 A
#69
Myrtle Creek
County, OR
92 A
#70
Newport
County, OR
92 A
#71
Terrebonne
County, OR
92 A
#72
Troutdale
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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