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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#121
Yamhill
County, OR
86 B
#122
Myrtle Point
County, OR
85 B
#123
St. Helens
County, OR
85 B
#124
Canby
County, OR
84 B
#125
Eagle Point
County, OR
84 B
#126
Salem
County, OR
84 B
#127
Talent
County, OR
84 B
#128
Boring
County, OR
83 B
#129
Canyonville
County, OR
83 B
#130
Lake Oswego
County, OR
83 B
#131
The Dalles
County, OR
83 B
#132
Bandon
County, OR
82 B
#133
Dundee
County, OR
82 B
#134
Gold Hill
County, OR
82 B
#135
Grants Pass
County, OR
82 B
#136
Oakridge
County, OR
82 B
#137
Yoncalla
County, OR
82 B
#138
Beaverton
County, OR
81 B
#139
Drain
County, OR
81 B
#140
Lafayette
County, OR
81 B
#141
Rogue River
County, OR
81 B
#142
Falls City
County, OR
80 B
#143
La Grande
County, OR
80 B
#144
Lowell
County, OR
80 B

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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