when i moved to this home about 15 years ago i had a neighbor tell me not to drink the tap. i didnt. my water report which comes out a couple of times per year has enough crap in it to have me concur not to drink it...bottled it isI don't get it either, a lot of bottled water gives me sort of an itch in my throat, especially if you drink a lot or drink fast.
My water storage is a whole bunch of the 5 gallon jugs like you'd see on an office water cooler, all procured for free, cleaned, sanitized, and filled with regular tap water. "Cap" amounts to a couple layers of new heavy duty plastic, topped with a layer of rubber (bicycle innertube) and held in place by a bicycle inner tube "Ranger band".
Never had a problem with any of it, I can still carry them easily, and smaller or weaker wristed people can still just grab the neck and tip while set on a countertop to pour into a smaller more manageable container like a pitcher, etc.
Requires some sturdy shelving for efficient "small footprint and tall" storage but I also did that for free out of a bunch of 2x6 the result of tearing out a sturdy backyard deck/patio for someone who wanted to make way for some landscaping or a pool or something.
Can also be loaded into a vehicle without the aid of moving dolly, come-along, etc.