Hmm. That's concerning. I had more or less switched entirely off bottled water and now only use a combination of filtered tap water + reusable insulated bottle

Hmm. That's concerning. I had more or less switched entirely off bottled water and now only use a combination of filtered tap water + reusable insulated bottles ala Kleen Kanteen at home and work, but I have recently started buying more sparkling water / club soda in an attempt to ween myself off Coke. Perhaps it's time I take the plunge and buy a SodaStream or comparable water carbonator.