ro unit
RO's are used basically for one thing and that is to remove nutrients from the water such as phosphates and nitrates especially.
and that's what they do.
As for most of us (on city water) he are fairly blest. I've contacted the local water dept, for an analysis of the water. It's very good. Yet I still use RO.
Unless I'm living in Angola or goodness knows where, I'll never invest in a sep UV just for water, b/c for what we do. It isn't necessary.
FlameAngel
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