[mdmarmd]

Your explanation is very helpful and clarifies some confusion I was having.

I had tried to determine the source of the pipe by tapping on it while my wife tried to localize the sound on the bathroom floor. She identified a point on the floor that made me think it was a drain connecting the washing machine outflow and the shower and sink drains. At the time, it seemed it was to the left of the toilet, about as far over as the middle of the doorway. I knew the washing machine and shower drains were connected because the flapper valve in the shower drain was pushed backward once by the outflow pressure from the washing machine.

Of course I didn't know what the toilet floor flange looked like at the time.

After reading your explanation, I lined up a picture of the RV with one of the floor diagram and its pretty clear that the toilet really does line up with the position of the leaking pipe.

The camp doesn't open up until around mid April depending on the snow pack. So, I won't be addressing this until then. If I have any questions then, may I contact you if needed?

Thanks.

Doug