I am not Zandor, but I aspire to be someday. R.O. water is reverse osmosis. You basically force water through a series of filters under pressure. You can turn seawater into potable water using mega R.O. systems. Before you ask, potable water means it is safe for human consumption. Beware, it can take up to 6-8 gallons of water to make one gallon of R.O. water. The higher your T.D.S. is to start with, the higher the rejection rate is. ANd water with T.D.S. content from hell it will eat filters like the adopted, red headed fat kid eats doughnuts. In that case, buy them by the skid.

If you have read the posts where you see folks adding Cal Mag back to R.O. water it is because you have removed all the minerals from it during the R.O. process. But I dont think you got that far cause you asked what R.O. water was. Anyways, thats it in a nutshell.


b0nger