Smell your water....

[Myka]

Originally Posted by IronChefItaly

Really common misconception that every RODI unit is equipped to remove chlorine/chloromines from municipal water supply. Very few are, and if your carbon manufacturer doesn't state it, chances are the majority of them are getting through

I test the water from my RO/DI after carbon and before RO membrane (I installed a tee and ball valve just for this purpose) about once a month. The tap water here has about 2 ppm chlorine and the single 1 micron carbon block on my RO/DI has no problem breaking the chloramine bond and removing the left over chlorine. I think the people selling the chloramine blocks are doing a good job advertising.

Chlorine also damages RO membranes really badly and really quickly. Any chlorine getting to it is going to wreck the membrane in no time. If typical carbon blocks didn't work good enough I think we'd see a lot more people with toasted RO membranes.

My RO membrane is over 6 years old, has made thousands of gallons of water and still puts out only 3 ppm (about 260-280 ppm tap water). No way could my membrane last this long if chlorine was getting to it.