Here is the short version:

Tap with a filter that is changed regularly is the healthiest and almost as cheap as straight tap water. Straight tap water is next healthiest in most cases and definitely the cheapest. Last, costing 1,900 times as much for the same quantity and containing some of the same toxic chemicals with potential for a few more when not handled properly, is bottled water. Yes, bottled water is very hard on the environment and potentially contains the same toxins as tap water as well as a few that leach from the bottle itself.

Avoid bottled water. Invest in a re-usable container instead.

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