Arsenic in Delaware Well Water

In Delaware, arsenic levels average 1.277 ppb, with a maximum recorded level of 3.351 ppb. The EPA limit is 10 ppb. Currently 6.4% of tested wells exceed this limit, affecting approximately 5,440 wells.

Testing for arsenic in Delaware typically costs around $136. If treatment is needed, water treatment systems for arsenic cost approximately $3,556.

The risk level for arsenic in Delaware is rated as low. The state average of 1.277 ppb is 69.9% below the national average of 4.243 ppb.