The issue of failing concrete foundations is under investigation by the state. To date, 231 homeowners in 19 towns have filed complaints with the state Department of Consumer Protection, alleging that their foundations are failing. A recent report from the state blames the problem, in part, on a chemical reaction caused by mineral pyrrhotite found in the concrete aggregate used in the area by the J.J. Mottes Co. Mottes has repeatedly denied it is at fault. In April, it leased its facilities and equipment to Connecticut Ready Mix LLC of Farmington, citing bad publicity that brought hard times to the family-owned company.