True there is waste water when making ro
water, this water can be used for many things. I have me unit near the washing machine so I have the waste water going into the washer and i use that to start a load of laundry. Some people save it to water there plants.
How much gas do you burn going to the store to buy water? The LFS
where I used to buy water was 40 min away, so when you add it up I spend more money buying water then making my own. And almost every time your at the store you buy something else.
There are some good units on e-bay.. I have a unit from airwaterice.com they are great people there and very helpful.