Water - As introduced, decreases from 1.5 milligrams per liter to 0.4 milligrams per liter the threshold for the presence of fluoride in a public water system that requires an increase in the frequency of fluoride-level testing from quarterly to monthly; requires public water systems to cease adding fluoride to drinking water supplies by May 1, 2025, and provide written notice of cessation of fluoridation to customers. - Amends TCA Title 68, Chapter 221, Part 7.

HB 897 lowers the fluoride testing threshold in public water systems from 1.5 milligrams per liter to 0.4 milligrams per liter. If fluoride levels exceed 0.4 mg/L, water systems must test monthly and notify customers. The bill requires all public water systems to stop adding fluoride by May 1, 2025, with a 30-day written notice to customers before cessation (no later than July 31, 2025). It specifically applies to artificial fluoridation, not naturally occurring fluoride, and does not affect systems meeting federal standards. The bill is pending in committee and not yet law.