Most people assume tap water is just H₂O, but municipal water systems across the U.S. consistently test positive for a wide range of contaminants that can impact long-term health. These include chlorine byproducts, heavy metals (like lead and arsenic), PFAS “forever chemicals,” pharmaceutical residues, microplastics, pesticide runoff, industrial solvents, and hormone-disrupting compounds. Many of these substances are present at levels considered “legally acceptable,” but that does not mean they