The acceptable level of radon in New Hampshire
depends on wether it is in water or air.
The current recommendation in New Hampshire is to consider
reducing radon in water when the level is between 2,000 -10,000 pCi/L
and the airborne radon level in the home is 4pCi/L or more.
The average level of indoor radon in the U.S. is 1.25 picocuries
per liter (pCi/L, but in New Hampshire, it is estimated to be 1,8pCi/L
Unit owners should seek Board approval before
installing any remedial system. Our buildings
have a mitigation pipe inside our wall. It is located
in the rear attic and runs to the basement
foundation wall. No external pipe is needed
except thru the roof.
Attached photos show an installed radon mitigation system.
