" Water to be stored for any significant period of time, should be hyper-chlorinated to 10-12ppm."

I guess it's up to each person to define significant. I currently rotate the bottled water out of my vehicle once a year. I guess what I'm looking for is to be able to extend that to a two-year interval by going to distilled water. That would be a worthwhile improvement to me, for convenience rather than money.

I also keep a single burner white gas stove in my truck. Even if the water went bad I could always boil it. But it would be nice to not have to worry about that.

Regards, Vince