For a long time (about 7 years) I had the same reusable water bottle. After moving to Beijing, I had to buy a new one because you can't drink unfiltered water here. I bought a new bottle which allows me to put boiled water into it. It's been a struggle to stay hydrated with the need to boil or filter all my water; so I am guilty of buying bottled water more than I used to be. It's nice to get back in the habit of using a reusable bottle.