mridgeelk Posted November 11, 2009 Report Share Posted November 11, 2009 At our home we get our water from a roof collection/cistern system. We have a UV purifier and two filters. I just added the second filter because we were having trouble with grit keeping the valves in the toilets from closing. We had been using just a 10 micron. Is a 5 micron filter small enough to stop the problem? Is there a standard regarding this? Thanks Quote Link to comment Share on other sites More sharing options...
Bill Kibbel Posted November 11, 2009 Report Share Posted November 11, 2009 I have a 5 micron whole house sediment filter that has stopped very fine silt and rust. Less than 5 microns is getting into carbon block filters. Class I >.5 microns Class II 1-5 microns Class III 5-15 microns Class IV 15-30 microns Class V 30-50 microns Class VI >50 microns The only other "standard" is filters should be NSF certified. Quote Link to comment Share on other sites More sharing options...
mridgeelk Posted November 12, 2009 Author Report Share Posted November 12, 2009 Thanks, Bill, I assume that the carbon block filters don't fit into into the same casings as the typical 10" filter does. Ed I have a 5 micron whole house sediment filter that has stopped very fine silt and rust. Less than 5 microns is getting into carbon block filters. Class I >.5 microns Class II 1-5 microns Class III 5-15 microns Class IV 15-30 microns Class V 30-50 microns Class VI >50 microns The only other "standard" is filters should be NSF certified. Quote Link to comment Share on other sites More sharing options...
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