Bottled water facts.
http://www.hc-sc.gc.ca/fn-an/securit/facts-faits/faqs_bottle_water-eau_embouteillee-eng.php

Drinking Water Chlorination facts.
http://www.hc-sc.gc.ca/hl-vs/iyh-vsv/environ/chlor-eng.php

Drinking Water Floridation facts.
http://www.hc-sc.gc.ca/hl-vs/iyh-vsv/environ/fluor-eng.php

Health Canada has modified all these pages numerous times. The water floridation page was update in 2010 and "The risks of water floridation" section was removed. The previous versions, specifically the 2004 version mentioned the cancer risks associated with water floridation. I have copies of those previous versions they don't want you to read.