Mysterious midship bilge water

pistole

the fella never replied about where his leak was from.

Black_Diamond

I replaced the hoses from the shower sump and mid-bilge as both had pinhole leaks. On top of that, I added additional hose so the path from the thru hull goes up to prevent reverse water flow from outside the boat. If that makes sense. 

If you replace the hoses, upgrade from that cheap plastic stuff. 

Stodge

I've had similar leaks.  In one case the shower sump was cracked and had to be replaced.  The more recent one was a leaky show head that let water collect under the shower floor and find its way to the spot between the steps and the mid-berth.  Turns out the wood that made the face of the mid-berth floor was rotting and had to be replaced....which meant taking out the entire mid-berth.