Has everyone considered what would happen in your area if trucks dont deliver the chemicals to your water plant where the water is pushed to your home?

Ok so Nana has asked a couple of times, what engineers do we have here that can splain a home made system to take water from the air and filter it.
I know good and damn well if I can buy one for 2,ooo$ that cycles 8 to 10 gal. per day, we have genius ppl right here that can tell us how to make our own system cheaper than buying one.