We offer a range of Phosphate Water Filters for both domestic and commercial applications. Polyphosphate or ‘Phosphate’ for short, is a popular water treatment media for limescale control. It works by coating the hardness forming ions like calcium and magnesium and prevents them from sticking to surfaces and forming limescale. Phosphate Filters are commonly used in point of use and point of entry systems for either whole property scale control or to protect a single appliance like a coffee machine. They do not alter the mineral content of the water which means it retains its healthy minerals, which is why this technology is commonplace in food and beverage applications.