| http://www.w3.org/ns/prov#value | - These concerns prompted 1500 Environmental Protection Agency professionals (Chapter 280 of the National Treasury Employees Union) to publicly voice their opposition to fluoridation in 1999.4 These scientists, engineers, lawyers and other professionals strongly opposed the high Maximum Contaminant Level (amount permitted in drinking water) of 4 parts per million (ppm) set by the EPA over a decade e
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