Penta's mission is to create the world’s purest water and water quality is our number one priority. At our source, we annually pull over 6,000 water samples on which 30,000 lab tests are completed to scan for more than 130 possible contaminants. After our purification process is complete, Penta water is guaranteed to be arsenic-free, chlorine-free, chromium 6-free, fluoride-free, MTBE-free, pharmaceutical-free, sodium bicarbonate, and BPA/BPS-free with total dissolved solids of less than one part per million. Have additional water quality questions? Please review our full water quality report or call us today at 1-800-531-5088.