Does bottled water, such as Smartwater or Fuji, need to have a hechsher for Pesach? If so, what is the reason?
Water: All unflavored fresh, bottled, spring or distilled water does not require Pesach
certification. Added fluoride or minerals do not present a problem. If there are
added vitamins or flavors, Pesach certification is required. Unflavored seltzer
also does NOT require certification.