when did they start putting fluoride in water
Water fluoridation The history of water fluoridation can be divided into three periods. The first (c. 1801–1933) was research into the cause of a form of mottled tooth enamel called the Colorado brown stain. The second (c. 1933–1945) focused on the relationship between fluoride concentrations, fluorosis, and tooth decay, and established that moderate levels of fluoride prevent cavities. The third period, from 1945 on, focused on adding fluoride to community water supplies.[36]
Bottled water Although vessels to bottle and transport water were part of the earliest human civilizations,[2] bottling water began in the United Kingdom with the first water bottling at the Holy Well in 1621.[3] The demand for bottled water was fueled in large part by the resurgence in spa-going and water therapy among Europeans and American colonists in the 17th and 18th centuries.[4] The first commercially distributed water in America was bottled and sold by Jacksonâ€™s Spa in Boston in 1767.[5] Early drinkers of bottled spa waters believed that the water at these mineral springs had therapeutic properties and that bathing in or drinking the water could help treat many common ailments.[4]