Water Hardness Oregon
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Water Hardness Oregon

Here are the water hardness values for the cities in Oregon.
City AVG Hardness PPM / mg/L AVG Hardness Grains per Gallon
Beaverton 28.3 1.7
Bend 21 1.3
Corvallis 30.9 1.9
Eugene 18 1.1
Hillsboro 28.3 1.7
Medford 33 2
Portland 41.5 2.5
Salem 12.3 0.8
Springfield 52.5 3.1
Tigard 41.5 2.5