I can buy 5 litres of water for 1,89€ at my grocery store. Because it's industrially packaged into a sterile container, it keeps for a good year or two. I have

I can buy 5 litres of water for 1,89€ at my grocery store. Because it's industrially packaged into a sterile container, it keeps for a good year or two. I have one of those for every member of the family (including pets) and a calendar alarm a month before they go "bad". Then we either use them for boiling pasta/potatoes or watering the flowers and get new ones. We've had to tap into them ... twice in a decade I think? Once when a neighbour did some DIY plumbing and the water was shut down for 12 hours while actual professionals fixed their oopsie and once when the municipal water treatment plant fucked up and the water was tainted for a bit.