TSCA Section 21 Petition to Prohibit the Use of Hydrofluorosilicic Acid (HFSA) as a Water Fluoridation Agent

This petition requested that EPA take action under section 6 of the Toxic Substances Control Act (TSCA) to prohibit the use of hydrofluorosilicic acid (HFSA) as a water fluoridation agent.

• TSCA Section 21 Petition to Prohibit the Use of Hydrofluorosilicic Acid (pdf) (21.88 MB, May 9, 2013)
• EPA Letter Acknowledging Receipt of Section 21 Petition (pdf) (129.63 KB, May 31, 2013)
• EPA Response to TSCA Section 21 Petition (pdf) (202.63 KB, August 6, 2013)