1st Stage
The polypropylene filter removes solids up to 5 microns such as sand, salts, and other dissolved solids in the water.
2nd Stage
The replacement filter consists of activated carbon from coconut shell. It reduces chlorine, the concentration of toxic heavy metals, natural organic elements, and petroleum products.
3rd Stage
Final stage. The filter removes elements such as sludge and other solids up to 1 micron.