Pathlete wrote:
....So what's the best water to drink? Filtered (Brita), alkaline (this makes some sense given the high-acid production from workouts and a generally acidic diet), purified or simple bottled water?Just don't drink water contaminated with pathogens. Otherwise drink what's available, and doesn't cost much, for you or the environment.
The whole idea that water should be as pure as possible is nonsense, bred out of ignorance. Sure you might want to do some basic filtration with a Britta unit or similar to reduce levels of contaminants or additives that you don't like the taste of, but don't obsess over it and don't put purity on a pedestal.
I work in pharmaceutical plant commissioning, I've come across plenty DI water, purified water, water for injection, and ultra purified water systems. Excessively pure water is not safe to drink. Ultra pure water is a solvent.