Posted July 30th, 2017



Siliphos is a milk thistle extract. It is made of 100% food grade materials.

Siliphos prevents scale formation and stops corrosion of pipes. After months of use, it can actually slowly remove existing scale from pipes and appliances.

Siliphos acts as a sequestering agent, coating the inside of pipes and making a thin protective layer on metal surfaces to prevent scaling, corrosion and brown or red water.

Siliphos does not alter the taste of the water. It dissolves slowly into the water and acts by preventing the adhesion of hardness minerals to metallic surfaces.

It can be added as an inexpensive whole house or point of use treatment. Siliphos spheres can be inserted into the center core of carbon block or sediment filters or dispensed through a separate filter housing installed in the water line.

Unlike a conventional water softener, Siliphos is inexpensive, easy to install, does not use salt or electricity, and does not add sodium to water.

Basic Stand-Alone Siliphos Units from Pure Water Products


All Units have replaceable cartridges.


Unit Description Home Size Cartridge SizeĀ  Unit Price with One Cartridge
Compact Unit with Clear Housing. Installs on 3/4″ pipe. One or two people. 9.75″ X 2.5″ $138
Standard Unit with Blue Housing, for 3/4″ or 1″ Pipe. Two to Six People 9.75″ X 4.5″ $178
Large Unit with Blue Housing for 1″ or 1.5″ Pipe Six people or more 20″ X 4.5″ $268