Copper in Hawaii Well Water

In Hawaii, copper levels average 0.394 mg/L, with a maximum recorded level of 1.473 mg/L. The EPA limit is 1.3 mg/L. Currently 8.6% of tested wells exceed this limit, affecting approximately 10,320 wells.

Testing for copper in Hawaii typically costs around $129. If treatment is needed, water treatment systems for copper cost approximately $537.

The risk level for copper in Hawaii is rated as moderate. The state average of 0.394 mg/L is 32.2% below the national average of 0.581 mg/L.