Arsenic in Idaho Well Water

In Idaho, arsenic levels average 2.43 ppb, with a maximum recorded level of 9.494 ppb. The EPA limit is 10 ppb. Currently 12.1% of tested wells exceed this limit, affecting approximately 33,880 wells.

Testing for arsenic in Idaho typically costs around $105. If treatment is needed, water treatment systems for arsenic cost approximately $1,766.

The risk level for arsenic in Idaho is rated as moderate. The state average of 2.43 ppb is 42.7% below the national average of 4.243 ppb.