The technology of the water filter is simple, effective, and, sustainable. A round-bottom ceramic pot is made from a mixture of clay, a combustible material (sawdust or rice husks), and colloidal silver. The colloidal silver is a naturally occurring anti-bacterial which improves the bacteria removal rate for the filter. First, the clay and combustible are both sieved through a fine mesh screens, then mixed together with a measured amount of silver and water until a homogeneous mixture is formed.

The mixture is made into a filter using a filter press. It is kiln fired to about 1000 degrees Celsius, burning out the combustible material and leaving micro pores coated with the silver to clean the water. During the firing process, about ˝ inch of charcoal is produced within the filter to improve taste and color.

The filter, which is designed with a rim, is placed on a five gallon plastic storage bucket with a spigot at the bottom for dispensing.

A lid is placed on the filter to prevent contamination. When used, water is poured through the ceramic pot and filtered into a plastic receptacle bucket (approx 5 gal) with a spigot at the bottom. Safe drinking water is easily poured from the spigot by all members of the household.
The flow rate of the filter ranges from 20 to 30 liters per day depending upon how often the filter is refilled. Filters are cleaned by lightly scrubbing the surface when flow rate is reduced, and it is recommended that the filter is boiled every three months to insure optimum effectiveness. The effective useful life of the filter is at least 5 years.