Two stages system ensures comprehensive removal of contaminates. The first filter removes fluoride and heavy metals, the second filter removes chemicals like chlorine, pesticides, herbicides, taste, odour, sediment and must other nasties. 0.5 micron, Australian Designed and manufactured for reliable performance. 12 months filter life for average household use, simple DIY replacement approx 5 minutes. No matter where you live in Australia this system will remove basically everything from the water – including fluoride, large doses of heavy metals as well as many other contaminants – leaving basically only the dissolved natural minerals like Calcium, Magnesium and Potassium.