Arsenic in Colorado Well Water

In Colorado, arsenic levels average 2.049 ppb, with a maximum recorded level of 4.198 ppb. The EPA limit is 10 ppb. Currently 14.0% of tested wells exceed this limit, affecting approximately 49,000 wells.

Testing for arsenic in Colorado typically costs around $143. If treatment is needed, water treatment systems for arsenic cost approximately $814.

The risk level for arsenic in Colorado is rated as moderate. The state average of 2.049 ppb is 51.7% below the national average of 4.243 ppb.