It only needs to be on if you want water pressure and you are not on city water. If you are not using your camper or are away from it, I turn it off (don't want a leak while I'm away).
2012 Sundance 3100RB w/Reese Goose Box
2004 Ford F350 6.0 L PSD, CC, DRW, long bed, B&W drop ball hitch, Firestone Ride-rite air bags.