Tenant parking on lawn

[Mark Forest]

Well now here is another clause to add to my 12 page lease.  I drove by my property and the tenant had parked his monster pickup on the lawn even though the drive way is quite long and the garage is huge.  I have given up asking why.  :(

Do I need to be concerned that this truck will damage the main sewer line or well pipes?  I would think they are many feet below ground, but my wife asked me this question, and now I am concerned. Is there anything to worry about?