well water rodi

[Myka]

Originally Posted by banditpowdercoat

I"m on a community well system. Pretty hard. comes out oftap 300-700PPM depoending. Usually around 400. My RO is 5micron/1micron/carbon/RO/DI I have just been changing ALL filters and DI at same time, only changed Membrane once. Water is/has never been 0 coming out of unit. allways 2-8ppm depending

In cases like this, it's wise to put a second RO cartridge. Test the water coming out of the second RO cartridge on a regular basis, and when it gets up to 15-20 ppm, throw away the first RO in line, put the second RO into the first spot, and put a fresh one into the second spot. Be sure to change out the sediment and carbon filters every 6 months (no matter how much you use it). Change out the DI resin as soon as you get 1 ppm tds. You should be able to achieve 0 ppm tds this way, and if you swap the two ROs like I suggested you actually won't burn through many more RO cartridges than if you were only running one.