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About Radon Levels in Grant County

The average national indoor radon level is 1.3 pCi/L. (FAQ: What is a picocurie?)

The average indoor radon levels of Grant County, as determined by radon test results from Air Chek, is 4.1 pCi/L

Local News

Radon Risk Chart for Grant County


    Results under 2 pCi/L

    Results between 2 and 3.9 pCi/L

    Results 4 pCi/L and above


Check Your Own Radon Levels!


Additional information about radon levels in Grant County may be available through this website.


State Radon Officer

Lauren Jenks
(360) 236-3325
WA State Dept of Health
PO BOX 47827
Olympia WA, 98504-7827