by Rose RohloffCalifornia Supreme Court Case - Fluoride in H2O - lack of informed consent and burying known risks especially to childrenThe case that was decided, Food & Water Watch Inc. v. EPA, came about after the EPA denied a 2016 petition calling for the agency to ban or limit the fluoridation of drinking water. Food & Water Watch and several co-petitioners subsequently sued the EPA to compel action based on the mounting scientific evidence of toxicity when fluoride is ingested.
Food and Water Watch Issued petition and fighting since 2016 As the Court wrote, we have proven “that water fluoridation at the level of 0.7 mg/L — the prescribed optimal level of fluoridation in the United States — presents an ‘unreasonable risk of injury to health or the environment, without consideration of costs or other non-risk factors.’” As a result, the EPA can no longer ignore the risk and must strengthen its regulations. Chemical properties of fluoride https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7230026/ Fluoride is ubiquitously present throughout the world. It is released from minerals, magmatic gas, and industrial processing, and travels in the atmosphere and water... The element fluorine has the highest electronegativity and the second highest electron affinity, making it highly reactive. At room temperature, fluorine exists as the gas F2, which reacts explosively with many elements. Fluorine is so reactive that it can form complexes with noble gases, most notably xenon (Holloway 1966). Due to its low stability, isolated fluorine is never found in nature. Instead, fluorine is either found as a complex or in its ionized form, fluoride. Fluoride interacts with many cations, including hydrogen and a wide variety of metals. It is the only halide with a positive pKa (3.2), and therefore exists in acidic environments as its protonated form (HF). HF, commonly released as industrial or volcanic fumes, turns gaseous above 20. Fluoride is most toxic in its protonated form, and vertebrates that reside in areas near HF production often show symptoms of lung damage and fluoride toxicity... Fluoride readily associates with metals.  Principles of fluoride toxicity and the cellular response: a review https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7230026/ Fluoride toxicity is greatly enhanced when complexed with metal. Among the most toxic (and most studied) complexes are aluminum- (AlF3,4) ... At both the single- and multi-cellular level, fluoride exposure causes acidification and electrolyte imbalance. The exact mechanism is unknown. Prolonged exposure of vertebrates to high fluoride results in the loss of calcium and magnesium from the plasma, and an excess of potassium (Dalamaga et al. 2008). Complementary to this finding, fluoride exposure in single cells results in an influx of calcium and magnesium, and a loss of potassium (Johnston and Strobel 2019). This effect has been proposed to be due to either downstream stress signaling, or the binding of fluoride to metals (Boink et al. 1994; Giachini and Pierleoni 2004). Regardless of mechanism, the imbalance of electrolytes in organisms from fluoride exposure has far reaching implication in cell homeostasis and signaling disruption.  
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