Surgeon General highly recommends all homes be examined for radon. Homes with radon degrees offour picocuries per Litre (4 pCi/L) or greater must be dealt with. The high cost of radon removal in the 1980s caused critics arguing that the issue is an economic boondoggle evocative the swine flu scare of 1976. They further said that the results of reduction are inconsistent with lowered cancer cells risk, particularly when indoor radon levels remain in the reduced variety of the workable exposure level. Since radon gas is discovered in a lot of soil and also rocks, it is not only able to relocate right into the air, however also into below ground water sources.