<prompt> Which of the following is the accepted safe level of flouride in drinking water ?0.5 - 0.8 ppm1.5 - 3 ppm76 ppmNone  <response>: The accepted safe level of fluoride in drinking water is 0.5 - 0.8 ppm. Deficiency of fluorine in drinking water is associated with dental caries and excess with dental and skeletal fluorosis. 