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The best value for money water on Amazon, while not the cheapest per litre, it’s not an annoying little bottle that you need to bring two bottles with you, it’s 1L. It’s great tasting room temperature and cold, has a good non flimsy bottle with a good lid.
I will say that opening this water and leaving it for a few hours outside the fridge does allow it to change taste in a bad way, however I generally recommend not doing that with any bottled water.