Quote:
Originally Posted by mike31154
With TDS 50 at source, DI only would probably not be economical. I've heard some of you on the west coast have TDS 10 or lower though, so it might be an option for those lucky few.
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Just checked my tap water and it is 64 at the moment. Have never seen it at 10 in Langley. I understand they also supplement here with well water (not sure why as we are tied in with the Metro Vancouver water supply).
Back to the OP question, here is some info on DI replacement from the manufacturer of my RO/DI unit.
http://www.airwaterice.com/category/z.2/
I have this unit, but with the 75 gpd membrane. I bought it used and still going strong.
http://www.airwaterice.com/product/1...TDS-Meter.html