Came out for a back up. Customers basement bathroom was not draining. Septic tank was replaced a few months ago. Opened cleanout and found it was holding water. Ran camera down and located blockage prior to the septic tank. Had to use sewer machine to snake the blockage and clear it. Cleared blockage and inspected location. Did not see any problems in the pvc section. We turned the camera back towards the house and inspected the cast iron under the slab. Multiple partial blockages. Cast iron is very rotted and snagging paper. Sections of the pipe have rotted out and are holding water. Back up will occur again if pipes are not replaced/relined. Gave them referral to zurn to reline the mainlines if desired. Gave quote to jackhammer slab and replace the pipes.
