I live in Adelaide and use filtered tap water in my humidifier. (Rinsed daily and washed weekly) I just returned from a European holiday.lathnos46 wrote:The water in Denmark has an extremely high level of calcium, or what they call calc, in it. You have to use water softeners for EVERYTHING. It leaves a film on everything it touches. I doubt very much that anyone uses the regular water in their Cpap machine. You would need to clean the humidifier every day. The very scarcity of distilled water backs up what the pharmacist told me.
In Greece I used bottled drinking water (not mineral water)
On a 17 day Windstar cruise I used filtered ship water (reverse osmosis)
In Switzerland I used tap water.
The only (slight) problem I had was in Switzerland, where although the tap water is amongst the cleanest in the world, it is highly mineralised. There was a white film developing on the bottom of the humidifier chamber within a few days.
All Australian tap water is safe to drink. Most tap water has a low mineral content. Adelaide is an exception, with relatively high salt and calcium, depending on the time of the year. Still, i have not noticed any build-up in the humidifier, I expect because I 'dump and rinse' every day.