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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#73
Grand Ronde
County, OR
92 A
#74
La Pine
County, OR
92 A
#75
Lake Oswego
County, OR
92 A
#76
Myrtle Creek
County, OR
92 A
#77
Newport
County, OR
92 A
#78
Port Orford
County, OR
92 A
#79
Seaside
County, OR
92 A
#80
Sutherlin
County, OR
92 A
#81
Terrebonne
County, OR
92 A
#82
Troutdale
County, OR
92 A
#83
Turner
County, OR
92 A
#84
Baker City
County, OR
91 A
#85
Bend
County, OR
91 A
#86
Clackamas
County, OR
91 A
#87
Clatskanie
County, OR
91 A
#88
Dallas
County, OR
91 A
#89
Hood River
County, OR
91 A
#90
Jefferson
County, OR
91 A
#91
Monmouth
County, OR
91 A
#92
Mt. Angel
County, OR
91 A
#93
Portland
County, OR
91 A
#94
Corvallis
County, OR
90 A
#95
Forest Grove
County, OR
90 A
#96
Gervais
County, OR
90 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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