Same for us. A little Chlorox in the fresh water tank after de-winterizing. Then I drive it a little bit to slosh it all around, run it through all of the faucets, then drain it all out. Refill with clean water for the season. Not that I am afraid of drinking it, but we use bottled water for cooking and drinking. \ken
Ken & Deb (WIT Club, FMCA, SKP, Harvest Hosts, and grateful volunteers with SOWERs)
2005 Winnebago Vectra 40FD w/400ISL and Allison 3000MH on Freightliner's Evolution chassis, Onan QD7500, 1000w Renogy solar, BlueOx tow gear, and 2015 Cherokee TrailHawk toad.