Well, there's your shorts and body washing water then. You might test out BioSuds (or whatever) beforehand to be sure it doesn't irritate you. Any possible effects from residual soap left in the chamois needs to be determined ahead of time. The water the company is supplying will probably be your only potable water. We carried a collapsible bucket so we could haul water way away from the stream for soap situations.
Sounds like you have a great emergency crew to have on hand.
