Can you provide a little more detail? When is it happening? (After sailing, after a rain, etc).
If the water is most apparent after sailing you may have the same problem I had on my 81 H-33.
In the cockpit stbd locker under the floor the fresh water pump mounts there is a void that did not drain to the bilge and would collect water until it was full enough to partially empty (usually on a stbd tack) and run along the floor the pump is mounted on and go into the head through one of the openings for the hoses.
Take a look at the floor in the pump compartment and see if there is an opening at the aft inboard end where it meets the inside of the hull (near where the wire bundle goes into the engine compartment). If there is and it has water in it may be the problem.
I ended up drilling a limber hole into the bilge in the forward inboard corner if you need to do this contact me and I'll give you the info.
Hope this helps
