Do yourself a favor and stop using the city water hookup. So many horror stories, flooding, bursting pipes, etc. What a waste IMO. Simply fill your holding tank, takes about 3-5 minutes, keeps the water fresh, easier to hookup and unhook for trips into town etc. Please don't give me the "I don't want to wear out my pump" blasting. Pumps are made to do their job for years and years.