Originally Posted by T34C
As disgusting as it is, some heads are actually plumbed to "flush" with the liquid from the holding tank. I had one like that once. Never could stop from getting creeped out by it.
I don't doubt that you are correct but...huh?!? How does it make sense to flush sewage with sewage? The whole point is to put sewage into the tank and out of sight/smell. Any head plumbed this way should be replumbed immediately. That's just dumb!