We already have two sterilized food grade 50 gallon drums. I'll fill them, treat the water and let them sit as stored treated water ....forever? If we need drinking water years from now we can pump portions of the water out of the drums and: 1. re-oxygenate via an aquarium pump with a charcoal filter or other sterile mechanical means and 2: re sterilize portions of the water to be consumed (just to be safe). Right?

Paramedic Pete: thank your for sharing your knowledge!