Originally Posted by Synovia
Thats a reasonably safe assumption. RO strips about 95% of everything, so if your water is reasonable, it should be pretty similar across the board (sorry phoenix and your 1500ppm tds)
Unfortunatley this is not so. R/O units work on a percentage of capability. My R/O unit runs aat 98.9% effecient. My tap water reads 264ppm before filtering, so it should read 2.9ppm after (its actually 4ppm).
So, if I was in Pheonix where the water is 1500ppm (WTF) it will come out at 16.5ppm.
The only trouble with R/O units are that they do strip everything out of the water including trace elements. These trace elements, wnich are impossible to replace, are what give different water its taste. eg. Burton-upon-Trent, England.
If you just want to remove the fhlorides and cholrides it is very cheap and easy to set up a activated carbon filter.