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.You may need Adobe Reader to view files on this page. See EPA’s About PDF page to learn more.
- TSCA Section 21 Petition to Prohibit the Use of Hydrofluorosilicic Acid (PDF)(255 pp, 23 MB, May 9, 2013)
- EPA Letter Acknowledging Receipt of Section 21 Petition (PDF)(2 pp, 133 K, May 31, 2013)
- EPA Response to TSCA Section 21 Petition (PDF)(2 pp, 207 K, August 6, 2013)