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Old 03-12-2015, 09:33 AM
 
Location: Columbus, Ohio
124 posts, read 134,608 times
Reputation: 159

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Why is using tap water (as opposed to distilled) a no-no for a C-PAP? Just before going to bed last night, I realized I was out of distilled water, so I got dressed and went to a convenience store to buy a jug. I'm set for the next few nights, but could I have gotten by filling the tank from the kitchen faucet just this once?
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Old 03-12-2015, 10:14 AM
 
Location: Portland, OR
9,582 posts, read 9,155,180 times
Reputation: 9162
All water (except distilled) has dissolved minerals in it. Mostly calcium and magnesium. When water evaporates the mineral solids precipitate out as a fine white dust. In the confines of the closed system of CPAP mask/human lungs and over a six to eight hour sleep period... cough, cough... you probably wont die but... cough, cough... so good on you that you bit the bullet and got some distilled water for your tank. A gallon usually lasts me weeks and is only around $0.80 at a big chain supermarket, so buy a couple of them there and you won't have to be gouged by the 7-11.

H
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Old 03-12-2015, 02:48 PM
 
Location: Paradise
2,401 posts, read 1,680,127 times
Reputation: 3857
I don't think using tap water short term would cause too many problems. I've had to do it for a week or so when on vacation and didn't have access to distilled.

For one night, I wouldn't question using tap. But generally, I keep distilled on hand as well.
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Old 03-12-2015, 07:50 PM
 
Location: Fredericksburg, Va
5,040 posts, read 12,317,205 times
Reputation: 7029
Once in a while, it won't hurt...but if your water has minerals in it (especially, well water), it will destroy the machine. It won't hurt you....it's about the machine getting gunked up!
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