This three stage filtration system with sink faucet tap ensures comprehensive removal of contaminates. The first filter removes Fluoride and heavy metals, the second filters removes chemicals like chlorine, pesticides, herbicides taste, odour, sediment and must other nasties. The third stage alkalises the water, raising the pH of the water to approximately 9pH. 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.