Of the more than 4000 chemicals present in cigarette smoke, more than 60 have been identified as cancer causing chemicals, 11 of which are known to cause cancer in humans and 8 that have been associated with causing cancer in humans.
1 Ground water wells can also be tested for radon, then, if needed, can get a water radon mitigation system installed. 2  Installing a water radon mitigation system runs from $1,000-$4,500, and maintenance runs $0 to $150 annually. 3  To find out about radon content in a city water system, call the local water provider. It's wise to retest a home's radon level every year or two after a mitigation system is installed. 2  Most radon mitigation systems include a fan, which will need to be replaced about every 5 years. 3  Expect to pay $250-$300 to have this necessary maintenance done.
The US EPA estimates costs at about $350 - $500 for mitigation in new homes compared to costs of $800 - $2500 for installing upgrades in existing homes. 14 Removing radon from water can be much more expensive.t is the leading cause of lung cancer for non-smokers. 2 The New Jersey Department of Environmental Protection (NJ DEP) recommends radon testing for all homes in New Jersey. If the radon concentration is 4 pCi/L or higher, a radon mitigation system is recommended. The U.S. unit of radioactivity is the Curie (Ci).