There are now two cases of death attributed to using tap water for neti pot solutions. The deaths are due to an amoeba present in tap water in Louisiana. This amoeba is deemed to be safe to consume but not safe for rinsing nasal passages. Please use only filtered or bottled water for nasal irrigation and do NOT use tap water. I would also recommend drinking only filtered or bottled water and would argue that amoeba in drinking water isn’t optimal. You may read the recent article here.