Televised ducts under slab floor. Ducts are concrete ducts possibly Transite with metal couplings. There was standing water in the ducts in the area of the kitchen sink. Ran water in the kitchen sink and saw water entering the duct from the joint. Sink drain needs to be repaired. The downspouts should also be extended away from the house further. After the sink drain line is repaired the ducts should be spray lined with Duct Armor duct lining material to encapsulate the concrete contaminated ducts.