> JimLane writes:
>
>Last I checked, and that about 10 years ago, the cost of RO also
>included a hidden cost as it cost several gallons of water per each
>gallon of RO, especially if it had a back-flush in it.
>
>Has the technology changed? How many gallons of water per gallon of RO
>in today's units?

Most people waste more water brushing their teeth... I've yet to ever see
anyone shut off the tap while they brush.

The RO unit cycles 3-4 gallons to produce 1 gallon of filtered water....
there's no appreciable cost or hardship unless one lives somewhere in a desert
and has to truck in their water. How much water do you think most folks
consume each day, at most 1 1/2 gallons, but most people average less than 1
gallon a day over time. The RO filters only the water from the dedicated tap,
not all the water in the house. Do two toilet flushes less each day and you'll
be even. In the US most households connected to municipal water never even
come close to using their basic allotment, unless they wash cars and water
lawns each day. With a private well there is no water bill for volume. I
guarantee you waste far more water without even realizing than you would ever
pass through an RO... do you have any idea how many gallons the typical
American teenage girl uses each day just washing her hair... well that's not
even close to the water the average teenage boy uses each day washing his
wheels.

Actually it's been proven that households with ROs consume far less water... no
one wastes water letting it run before filling their glass, coffee pot, cooking
water, etc... place whatever vessel under the spigot and press the lever, no
water ever hits the sink.... RO water is always fresh tasting and doesn't get
any colder by letting it run... left full open continuously the storage tank
will empty far faster than it can filter more water. ROs are not designed for
large volume usage, like washing, but produce an adaquate supply at an adequate
rate for drinking, cooking, ice cubes and such... my unit has a 1 1/2 gallon
storage tank, I've never yet needed an amount of water at one time that came
close to emptying it.


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