Water conservation isn't the problem, I've taken 4 showers on one fill of a 5 gallon solar shower, with enough water left to get one more shower. I'm considering setting up my toilet to flush from grey water, and try to separate the rinse and flush so I can dry flush for #1 and wet flush #2.
My problem is I'm converting a 21' school bus, that only has 90 - 100 sf building space, and I'm planning on boondocking. I've seen no drink orders too often, and want something that is reliable at purifying water. A solar still would be useful, but takes up time and space.
"The magic happens outside your comfort zone"
2000 Workhorse short school bus
1980 Suzuki GS550L "Toad" (more like leap frog).