The least that can be done is to make sure the plastic water bottles are recycled.

Better yet, bring your own, non-plastic water bottles. I guess you haven't heard about the risks of Bisphenol A. Its a very unhealthy chemical that leaches from the plastic, especially in the hot sun. So much so that Health Canada has banned the use of baby bottles that contain Bisphenol A. Besides causing cancer, it may be responsible for early onset puberty because it mimics estrogen.

http://www.cbc.ca/news/background/health/bisphenol-a.html

For Mother's day, I was presented with a red, stainless steel water bottle. My daughter bought ten of them online at about half the retail price to give to her friends and family. Don't wait for the government to protect you.