We have lived with a moderate to severe drought here on this property in SC. I found out, that i had loads less laundry to do when there was a chance the well would run low. It did. Twice. On my watch.
It ended up that we would wear our clothes longer, push an extra week on the bed sheets, re-use laundry rinse water.
Now, take that into consideration if you were to lose power completely. You would not be doing those many loads of laundry anymore.