 In 2008 the recommended fluoride levels in Canada were reduced from 0.8–1.0 mg/L to 0.7 mg/L to minimize the risk of dental fluorosis.Ontario, Alberta, and Manitoba have the highest rates of fluoridation, about 70–75%.The lowest rates are in Quebec (about 6%), British Columbia (about 4% - Vancouver does not add Fluoride), and Newfoundland and Labrador (1.5%), with Nunavut and the Yukon having no fluoridation at all.