Contaminants are pervasive in chemicals, but the contaminants found in the chemicals used for water fluoridation are controlled and regulated for volume and amount, so as to not be harmful. The United States Environmental Protection Agency regulates the maximum permissible level of contaminants in drinking water (Pontius, 1991). The maximum contaminant level (MCL) of fluoride is 4 ppm, while California's MCL is 2 ppm.
Pontius, F. 1991. Fluoride regulation and water fluoridation. J. American Water Works Association. Nov; 83:20.
Return to Fluoridation: Facts and Fiction
| Conditions of Use