Yes, I do use reusable water bottles, but worry about the chemicals in those. I always recycle my water bottles when I do use them. I was glad to read about the camelbak ones without the chemical in them.
I don't worry about tap water in our country but sometimes do not like the taste, so I filter it at home with an inexpensive water filter. It helps so much.
Nestle is now producing bottles with less plastic which hopefully will encourage other water bottlers in the country to do the same. If one can do it then why can't another?
I will check your contest out for sure! and thanks!