[jmk]

The pump is most likely in the engine room, but the inlet for your freshwater hookup is probably on the outside, in your cockpit someplace. It accepts a garden hose connection, probably the only thing on your boat that does. But it really makes sense for you to go and trace all of the fresh water lines on the boat. Get to know the system, as they may have disconnected the lines in some places in order to winterize. In addition the boat should have a freshwater tank and that probably has antifreeze in it right now. Drinking it can give you a pretty bad bellyache. So you'll have to flush and empty the tank several times to make sure that it is clean. When you hook up city water to the garden hose connection, the pump isn't used and neither is the tank. The tank will remain full of anti-freeze until you open the deck fill plate and fill the tank and empty it several times by running a faucet and using the pump (that means no garden hose connection).

The hot water tank is probably in your engine room as well. It also needs any antifreeze flushed out of it. If they were smart all they did was drain it. Hot water tanks properly drained do not need any antifreeze. Once you have your water running out of the faucet, you should be able to open the rotary valve underneath your back your vacuflush toilet and the water supply for the toilet will be there. Turn on the breaker for the toilet pump and you're ready to go.