Radon in Washington Well Water

In Washington, radon levels average 225.789 pCi/L, with a maximum recorded level of 566.173 pCi/L. The EPA limit is 300 pCi/L. Currently 6.3% of tested wells exceed this limit, affecting approximately 30,240 wells.

Testing for radon in Washington typically costs around $27. If treatment is needed, water treatment systems for radon cost approximately $3,084.

The risk level for radon in Washington is rated as low. The state average of 225.789 pCi/L is 63.6% above the national average of 138.042 pCi/L.