It should read 'water pump compartment'.
My layout from back to front is A/C, water tank over the batteries, rear wheels, water heater, water pump compartment, pass through storage, then 3 storage bays.
It is interesting that it stopped leaking when the water supply was turned off. So 2 things....1...I'm glad Winne put in a drain....and 2....where the heck is that water coming from?
It's not the water tank overflow...mine is right behind the water tank. It's not grey or black water. Doesn't seem to be close enough to the frig to be the drain for anything. But it does fit right under the passenger side bath....toilet and sink.
Going to take the bath apart next weekend and take a look.
2017 Cedar Creek 38EL/2015 Silverado 3500HD