I know we have all at least heard about somebody leave their RV hooked up to city water while they did a day trip, returned to find wet floors, traced to leak in water system. Now I understand the pump is less likely to force a leak, but you got to admit that traveling our highways increases the chance.
I can't stand under the idea there would not be a pump switch in bathroom. Ideally the pump would be controlled by 3 way switch. Just a rocker/toggle switch would work, but might be PIA to make sure both are off. For the OP, a momentary contact switch to hold while you want water to run.
