[Motor31]

We keep a 1/3 tank of water all the time. That's for those times when we need to stop and there are no hookups or we just need the toilet and sink without having to be at a park. There have been very few and far between times we really needed much of that water and we "cycle" it regularly so it doesn't get old. At least once a year we do dry camp during the winter so we have a use for it then but that's the only time we fill it for primary use. At one park we like a lot the water pressure is rather low so we'll fill the tank so we have the pump pressure for showers.

When we have to drain the tank we'll do a load of laundry. Two whole loads will use most of it then we drain the "dregs" via the bottom drain and let the tank dry a bit before refilling to 1/3.