A rental property customer called saying his tenants have not been able to drain their 2nd floor unit washing machine without it overflowing.  Upon accessing the drain line we found it was over 18" too high and not vented due to an improper plumbing remodel.  Now he is having to pay twice thanks, to an unlicensed plumber!  Remember!  An unlicensed plumber, IS NOT a plumber!  #americanplumbingla.com, @americanplumbingla.com, #leakdetection