Shower sump pump, or not?
QWhat purpose does a shower sump with built-in pump serve? Are they really necessary? TONY JOSE, via email
ATONY REPLIES: When used in inland boats where users can be expected to push a button now and again, I think they are a right pain because they can clog and leak smelly water into the bilge. However the one advantage they would have is that they can be fitted with a float switch so they are fully automatic, with the user simply turning on the shower and forgetting about the waste. The sump can also be used as a collecting point for grey water from wash basins allowing the outlet to be above the waterline.