Take it for what it's worth, but if you know me I have been around since before Voat - same name. I am pretty low key I think but judge for yourself.
Anyhoo, my husband got a call from his brother, former Commander in the Navy. He is hearing that things are going to get a little crazy in around four weeks and that people should have four weeks of food and water just in case. Be able to sterilize water too. Something to do with panicking deep staters trying to block ports and food supply. This brother is really smart - many engineering patents to his name in his post military civilian career. Retired now but was literally considered intellectual property when his company was bought and sold, etc. The regular Joe brothers tend to think he's a right wing nut, and he is absolutely right wing but so am I so that doesn't really dissuade me. Not gonna lie sometimes I think he's a little out there. But he still has friends in high places and he knows people think he's nuts but feels it's important to share. Thought I should too and let people do what they want. His point is if you spend $600 to stock up and nothing happens, you still have $600 worth of food and water. If you don't and you end up really needing it....you don't.
Partial answer.
I washed my hands during the power outage this winter with water from the hose, gathered before the water was lost, kept in gallon jugs that originally held emergency spring water. I filled an 18 oz cup for pouring over my hands each wash. It's nice to have a little more than that. You might need to do minimal dishwashing and as well as have water for pouring in the toilet.
If you fill up previously used jugs with hose water and leave them in the shade on the ground, the water can turn greenish after several weeks.
How much would each person feel comfortable washing their face and body with a cloth or paper towels with each day?
Planning on not washing underwear for four weeks?