Okay to Use Tap Water for Neti Pot?

I was alarmed by an article about deaths related to using tap water in a neti pot. I have been using only tap water. Should I change to filtered, bottled or distilled water?

I have always recommended using distilled, bottled, or filtered water for nasal rinses, using a neti pot.

An alternative could be boiling tap water for at least five minutes, and then letting it cool. Municipal tap water should also be safer than well water.