High mountain desert in N M. Water mostly comes from my two wells. Both hit an underground river flowing in a lava tube from the ancient Volcano where I live. It has always tested safe.
I have 2, 5 gallon and 2, 2 1/2 gallon containers, 30, 34 oz Gatorade bottles, 12, 3 lt soda bottles, and 2, 2qt refrigerater door containers in the fridge and the rest filled in my laundry and kitchen areas. That’s approximately 35 gallons inside. Outside I have 3, 55 gallon blue food grade barrels filled for drinking or cooking use. Then for garden and critters there are 6, 330 gallon totes in wire cages for moving (but I don’t)! And one 230 gallon tote in a metal cage strictly for garden use. It was a liquid fertilizer container. I filled and drained it 10 times before using it on my garden. It could have burned a garden. I drained it down my dirt/ gravel driveway so it was away from anything of importance till I was sure it was clean. I was told to rinse it 2x. I did it 10x. The larger totes once held food safe white glue for a factory. Used once. Cleaned. Sold cheap. I pd $75 each for the 6 larger totes delivered and each set where I wanted it.. I can fill buckets from the 2″ bottom valves but my next project is to reduce that to fit 3/4″ garden hose fittings. I can do that with PVC fittings. Near to the toilet are 2 kitty litter buckets that can flush the toilet 2-3 times per bucket. There are three more kitty litter buckets stacked empty in a nitch by the shower. Those are filled in winter.
One well is on commercial power. The second well is capped but easily converts to use with a manual winch. I’m gathering supplies to have a solar powered pump and tank there. My home is 100% solar powered.