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 average radon mitigation system is installed for under $1,500. Some homes require multiple mitigation techniques and /or systems, so the costs can vary. In new homes, the cost to install a passive system is less since the system is installed during construction.he average radon mitigation system is installed for under $1,500. Some homes require multiple mitigation techniques and /or systems, so the costs can vary. In new homes, the cost to install a passive system is less since the system is installed during construction.