About Radon Levels in Grafton County

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

The average indoor radon levels of Grafton County, as determined by radon test results from Air Chek, is 4.4 pCi/L

Local News

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

State Radon Officer

Lynne Clement
(603) 271-1708
NH DHHS Radon Program
29 Hazen Dr
Concord NH, 03301