Can I Use Bottled Water For Neilmed Sinus Rinse?

Can I Use Bottled Water For Neilmed Sinus Rinse? Use distilled, filtered, bottled or boiled water at room temperature — never tap water. Tap water may not have been filtered or treated like distilled or bottled has and may cause infections. “There are potential side effects to nasal irrigation,” says Dr. Is bottled water sterile?