Santevia MINA Filter 3 Pack - Filters 99% fluoride, a toxin that may cause thyroid and neurological problems (Fluoride Removal Filter only). Filters 99% chlorine, a chemical disinfectant that can damage healthy gut flora. Filters 99% lead, a neurotoxin that’s especially harmful to children.  Filters 90+ contaminants including heavy metals, PFAS & PFOS, and VOCs. Adds essential minerals like calcium, magnesium and potassium to support your health.  Raises the pH level by up to +2.0. Creates great-tasting mineral-rich water for healthy hydration.