My kids and I could get 3-4 days out of our 50 gal tank with some left over. When my wife comes along, we're lucky to get through the second day. She's constantly washing her hands, or scrubbing this or that. I love camping with her, IF we have hookups. Boondocking results in arguments. She looks at me like I'm crazy when I suggest she doesn't need to keep washing each and every thing. THAT'S why people can't give you a good idea how long your water will last. I've done things to stretch it, like bringing a couple 6 gal water containers, replacing the shower head with an oxygenics, and using a wash tub in the kitchen, which then gets emptied into the toilet, saving gray water capacity.
