Water Filtration Technologies

Recommended for highest quality pure drinking water. Install under kitchen counter, keep a carafe or jug(s) filled for emergencies, to see you through short term outages.


This three stage purifier provides an unparalleled level of protection against contaminants, as well as bacteria and cysts. The first stage is the KDF/GAC cartridge for removal of chlorine, heavy metals, chemicals, tastes and odors. It is replaced about every three years. The second stage is the multimedia carbon block for additional protection against VOCs and MTBE, as well as filtration down to 0.5 microns. The third stage is the  Ster-O-Tap Low Pressure Membrane insert (resides inside carbon block) for removal of bacteria and cysts. It strains down to an absolute 0.15 microns – the smallest known bacteria is 0.3 microns. It does this without the flow restriction of ceramic filters, and without constant cleaning! It is replaced about every two years ($89.00).  1 year warranty on carbon block/Ster-O-Tap cartridge, 3 year prorated warranty on KDF/GAC cartridge, 5 year on components. 12″ tall, 10″ wide, 5″ deep.

Ster-o-Tap capillary membrane technology

Comparison of water filtration technologies

Andrew Weil endorsement of KDF Quoting…

“I’m now in favor of a system that combines a solid carbon block filter with a copper-zinc alloy called KDF. This dual system removes most impurities and is affordable and simple. The KDF puts small amounts of copper and zinc into the water, which is healthful.”

5 Year Operating Cost Comparison

Make Unit Cost Filter Replacement Cost Replacement Frequency 5 Year Operating Cost
PureEarth CT $89.40 $35.40 3 Years $124.80
PureEarth CT-E $53.40 $23.40 3 Years $76.80
NSA 50C $179.00 $179.00 3 Years $358.00
Amway $213.00 $79.95 1 Year $532.80
Multipure $329.95 $34.95 6 Months $644.50
Brita $35.00 $7.00 2 Weeks $938.00
Innova $6.99 $5.99 2 Weeks $796.00
Pur $49.00 $9.98 3 Months $238.62
Typical R/O System $599.00 (1) (2) $1015.00
Typical Distiller $350.00 (3) (4) $1172.00
Bottled Water $0.79 $2,960.00
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