Well don't feel bad. It wasn't too long ago I had the old sucker truck out. He said all was well after draining. About two months later it started backing up again. I opened the tank and it was full. Now like alabama said there is a Tee to let the liquid out to the drain pipes but it shouldn't get TP because the inlet is below the surface of the water. For a good functioning septic tank the fluid will up to about a foot to a foot and a half from the top. If it gets to the very top it is NOT draing for some reason.
If your tank gets full and that Tee is not plugged, something is FUBAR in the drain system.
I rented a little track hoe and dug mine up to find right at the discharge of the tank it was bound up with roots. The stupid idiots had not cemented the joint. Well since I had the track hoe I dug it all up and replaced the two drain pipes anyway which was good as I found they had not sealed the joints and they were root bound also.
I have a black water tank and a grey water tank. I got an estimate to replace the drain field for the black tank and it started at $3500 from a guy who does it on the side to $6000 for a real business. I rented the track hoe and bought all new pipe and the total was less than $600 and it took me about 5 hours.
If your tank gets full and that Tee is not plugged, something is FUBAR in the drain system.
I rented a little track hoe and dug mine up to find right at the discharge of the tank it was bound up with roots. The stupid idiots had not cemented the joint. Well since I had the track hoe I dug it all up and replaced the two drain pipes anyway which was good as I found they had not sealed the joints and they were root bound also.
I have a black water tank and a grey water tank. I got an estimate to replace the drain field for the black tank and it started at $3500 from a guy who does it on the side to $6000 for a real business. I rented the track hoe and bought all new pipe and the total was less than $600 and it took me about 5 hours.