I’ve never seen this before. It doesn’t seem right, but I cannot find anything that specifically disallows a septic tank in the home.
The house had been added onto and, therefore, the septic tank ended up in the added-on room. In the room, there is a cleanout sticking out of the slab about 6 to 8 inches. Just under the cap, there is a 2-inch vent pipe that comes out horizontally then turns up, goes up along the wall and out through the roof.
Can anyone tell me if there is anything in the code that specifically disallows this?
(My picture of this did not work out for some reason.)