By the way, I learned the hard way, almost all bottled water is reverse osmosis. They do this to remove bacteria so it doesen't get skunky.

And get this: "spring water" is also typically also reverse osmosis and treated with ozone (made into low concentration hydrogen peroxide). If its called "mineral water" they add minerals back in after all this.

AND! its bottled in PET or HDPE which leeches microplastics and other zenoestrogenic and endocrine disrupting plasticisers.

So: you can't drink tap water, you cant drink bottled water, you can't drink RO water,.. WHERE TF DO YOU FIND WATER?

Ideally, get water directly from a deep aquafer or natural spring that has about 15 grains of calcium carbonate is free of heavy metals, arsenic and other poisons. Haul it if you need to. Buy a few 5 gallon glass carboys and a pottery, glass or steel dispenser.

If this is out of the question, install a RO system and remineralize the water yourself. This is called "adding brewing salts" and "adjusting your water" for beer brewing.

A third option, possibly the most expensive and produces safe but not necessarily ideal water (in my opinion,) yet is a good preparedness item, is a Berke with an activated charcoal stage and put tap water or low quality well or spring water through it.