Arsenic in Oregon Well Water

In Oregon, arsenic levels average 1.681 ppb, with a maximum recorded level of 8.194 ppb. The EPA limit is 10 ppb. Currently 8.1% of tested wells exceed this limit, affecting approximately 28,350 wells.

Testing for arsenic in Oregon typically costs around $140. If treatment is needed, water treatment systems for arsenic cost approximately $4,258.

The risk level for arsenic in Oregon is rated as moderate. The state average of 1.681 ppb is 60.4% below the national average of 4.243 ppb.