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 cost for a certified or licensed mitigation contractor to lower radon levels in a slab or basement home is about $1,500, and a crawl space home is about $3,000 or more. Your costs may vary depending on the size and design of your home and which radon reduction methods are needed.n effective radon mitigation system can reduce the radon level in your home by up to 99 percent. Homeowners with radon systems have also experienced a reduction of other indoor air quality issues such as moisture and soil gas intrusion problems in their home.