[C320-list] Water under Sewage Holding Tank

[Dave Hupe]

 Jeff-
Another item comes to mind regarding your water accumulating below the waste holding tank.  Are you using your head and pumping in lake/seawater from outside (rather than using water from your water tanks as many folks do)?  You should have a vented loop  https://www.defender.com/product.jsp?name=forespar-vented-loop&path=-1|51|2234294&id=2681269  in the hose feeding water to the toilet, located somewhere behind your head medicine cabinet (easy to remove with 4 screws). It is just like the vented loop on your engine seawater feed.  If the duckbill in the vented loop for your toilet is bad, it is possible that you are leaking  lake water out the duckbill when you pump the water for the toilet.  I'm thing this might be close enough to the waste tank to be your water source ???
Dave Hupe

1994 C320 #32
Holland, MI