Originally Posted by FrankZ
I never use the hot tap water for consumption. Really it is by habit.
I did see to remember something about not using hot tap water for Netipots as it can risk some brain eating nasty that can't get you from drinking, only from snorting the water.
Not even an unusual organism or one that you can't ingest without harm. The gastrointestinal system is tuned up to handle a great deal and to resist a lot more. For instance, you can
get giardiasis from drinking directly from open water sources like streams and ponds, but the odds are that you could be exposed many times through that behavior and not become ill.
But a lot of our sensory system is really the brain extruding outside the cranial vault. You eyes are continuous with the optic nerve that is really just part of the brain. The sinuses are barely separated from the brain. The inner ear is arguably a brain portal. And the brain is not at all adept at handling infections. The blood-brain barrier cannot pass most dangerous infections, and when one does get through from somewhere, the same mechanism prevents antibiotics from passing into the brain, making brain infections very difficult to treat. Pumping water and whatever is in it up your nose is driving it right at the brain. (Doing "cannonballs" in open lakes and streams can do essentially the same thing, and they see similar infections and death rates from them from that cause as from the nasal irrigation.)
But even with that known, many, many people use tap water with Neti-Pots and have no problem, because the body is pretty good at its job. But the body can only do so much, and I wonder if those who got in trouble weren't frequent users. Frequent exposure does indeed make a difference.
I had a guy who usually shot up his dope with tap water. One night, he had scored and found himself along an urban creek that ran below an area where sewers leaked. He had never had a problem with tap water, in spite of the bugs that are always in it. But after shooting up sewery creek water, he died a lingering death from such an array of infections that they couldn't document them all.
On the hot/cold tap water thing, I'm kind of with Greg. The hot water side just turns out to be not so appealing in terms of taste. But I do get the jump on boiling water for pasta (usual wimpy residential duty gas range problem) by starting with it as hot as the water heater can deliver, which is pretty hot, since we are adults of (on a good day) nearly normal intelligence who have no children to scald themselves.