Does a reverse osmosis filter waste water?
Published January 19, 2012 | 
Bill writes:
Do reverse osmosis systems waste water? If how do they waste water and how much waters is wasted?
Hi Bill
Yes, reverse osmosis units do waste water. This is because of the way they filter. What happens is that when water enters the filter, it is pushed up along side of a reverse osmosis membrane, much like a rubber sheet. Some water molecules pass through this membrane, resulting in the water you drink from the machine. The rest of the water, with the concentrated impurities, is sent to drain. This is called the concentrate.
It depends on the manufacturer, but up to 50% of the water that enters the machine leaves for the drain.
If this bothers you, distilling water produces water of similar composition to reverse osmosis water with much less water waste. Home distilling machines are available to the general public, and you can click here to look at an example.
Hope that helps,
Mike
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Posted in Conservation, Drinking Water, Filtration, question | 
how R.O. works, r.o., reverse osmosis, waste water | 
Leave a commentDoes boiling tap water take fluoride out of it?
Published June 15, 2011 | Dawn Asks
If you boil tap water, does that take the fluoride out of it? I’m sure almost everyone knows that fluoride isn’t the best for you, among other things, and I don’t feel comfortable drinking it. I don’t want to buy a new jug of water every time I feel like making tea or something though.
Hi Dawn
Boiling water will actually concentrate the fluoride, because when boiling water steam escapes that is pure water leaving a higher concentration of fluoride behind.
You can purchase a water distiller or reverse osmosis filter that will remove the fluoride. Both are around $300, so you need to do a calculation to see how long of not buying bottled water will pay back the purchase. After that, it’s all money in your pocket.
For example, if you spend $20 a week on bottled water, buying a $300 distillation unit will pay for itself in 15 weeks.
I hope that helped.
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Posted in Conservation, Drinking Water, Filtration, question | how R.O. works, r.o., reverse osmosis, waste water | Leave a comment
