5 micron filter

[mridgeelk]

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

[Bill Kibbel]

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.

[mridgeelk]

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.