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About Radon Levels in New Castle County

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

The average indoor radon levels of New Castle County, as determined by radon test results from Air Chek, is 2.5 pCi/L

Local News

Radon Risk Chart for New Castle 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 New Castle County may be available through this website.


State Radon Officer

Kurt Olinger
(800) 464-4357
(302) 744-4816
Delaware Division of Public Health
417 Federal Street
Dover DE, 19901

Radon Resources