I never knew about those 275 gallon totes before but already found one on the local Craigslist for $75.
Here is another idea for smaller quantities:
I reuse the empty plastic bladders from box wine for water and Gatorade.
They work great for emergency home use, camping, backpacking, tailgating, car trips, etc.
The sizes I see locally are 2, 3 and 5 liter and come equipped with an outlet valve.
The outlet valve is made of a soft plastic assembled by a force fit.
The valves are a tight fit but can be disassembled just by pulling them apart.
Remove the bladder from the box, pull the valve apart, then rinse out the bladder several times.
Fill it with a strong baking powder solution and let sit for a few days.
Empty, rinse and let it air out for a few days.
Give it the smell test - the soak and rinse should render it pretty well odor free.
Then it is good to go.
Fill with water, and reassemble the valve.
The filled bladder can be frozen if you leave room for expansion when refilling.
I have never had one of the valves leak even after multiple disassembly/reassembly for refilling.