Does a RO, filter out chloramines?

[mike31154]

Not a chemist, but if not mistaken, most RO systems designed to handle chloramines have an extra carbon stage before the membrane. Both chlorine and chloramine will destroy your membrane in short order, the DI has nothing to do with removing either since it's downstream of the RO membrane. Don't know if there's anything special about the extra carbon stage. I believe my BWI system is rated for chloramines since it has the extra carbon stage. So my config is 1 micron poly pre-filter, re-fillable carbon stage, 0.5 micron 'chlorine guzzler' carbon block, RO and finally DI. In my case it doesn't really matter since I know that my source water is treated with chlorine only, not chloramine. I've been considering dumping the first carbon stage and replacing it with another poly pre-filter, say one 5 micron, then a 1 micron, then the carbon block.