Do buy a few gallons of water at the local grocery store. You’ll need at least one every time you need to flush the toilet. You’ll also need it for hand-washing and tooth-brushing.Do’s and Don’ts for When You Don’t Have Running Water163Michelle HozeyJack HerlockerJun 15, 2017·1 min readActually, you can just save your gray water from warming up the shower and stuff like that, then use it for the toilet. Isn’t that great? Oh, sorry, missed the second half of bullet one. Nevermind, carry on.