Which water should you drink? Since pure (non-disease-causing) water is available locally, it makes sense not to waste non-renewable gasoline shipping it around the country (or the world).
If you don't like the way your faucet water tastes or you don't think it is germ free, by all means use a water filter.
If you need to carry your water (or other beverages) with you in order to drink enough, what’s the best way to do that? At this time, the best option is a thermos or a stainless steel water bottle.
All plastics are made from petroleum and we are close to depleting world supplies of petroleum. Also, every one liter plastic water bottle produced contaminates 26 liters of water in the production process.
Polycarbonate water bottles (those hard plastic ones that come in a rainbow of colors) leach bisphenol-A (a known carcinogen) into your water. Other types of plastic are also known to leach. (Your taste buds know. How many times have you tasted the plastic when drinking from a plastic water bottle?)
The mining of metal is not environmentally benign, but stainless steel is reusable, non-leaching and recyclable and our best option for now.