Radon!

[KEVIN FLYNN]

In the process of purchasing a multifamily.  We had a radon inspection and it came back 5 times over the EPA allowance.  There is a family living in the house now.  The radon mitigation system can lower the amount in half.  My question is will we be liable for that family if any issues come up?  The 1st level where they are living will have a lower amount of radon that is acceptable by EPA standards but they use the basement to wash clothes, which will have 2.5 times over EPA standard amount of radon.  Any clue what I should do? Back away from deal?  Thanks for any input!