I've been flushing, on average, more than once a day for a year and just learned that tap water is NOT recommended.

bottled/boiled water is a colossal PITA and I can't imagine most people mess with it.

What are the feelings here??

I use distilled. Maybe I'm being over cautious. Using the neti pot has made my fall allergies almost disappear. I wish I had tried it years ago.

Bad water may have caused a couple of deaths in 2011.

http://www.fda.gov/ForConsumers/ConsumerUpdates/ucm316375.htm

Those deaths were attributed to people using well water that was not disinfected, I think. I use tap water but nuke it for 3 minutes and let it cool down some. I started using it about a year ago and it has helped with allergies immensely. I typically use it once or twice a week.

I microwave filtered water. It is lot less of a hassle than having debilitating sinus infections.

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I microwave filtered water. It is lot less of a hassle than having debilitating sinus infections.

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I do the same thing.

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more than once a day for a year

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Seems a little much.

My dad uses microwaves filtered water from the fridge dispenser, I use filtered water from one of those Brita jugs.

I microwave till it's just about boiling (usually 2-3 minutes), then cover it and let it cool. When I want to use it I just warm it back up for 20-30 seconds and mix in salt and sometimes baking soda, and go from there.

Distilled

I used to use tap. Now I use distilled.

I just use 0.2 um filtered phosphate buffered saline eluent from a 5 mL/min peristaltic pump.