Proper filters do more than improve the taste of your coffee! There are four main things that dictate filter performance, PH, Hardness reduction, sediment reduction and chemical reduction. Water that isn’t filtered properly causes limescale build up in your machine. This causes blockages and corrosion, and as a result can require costly repairs. Many filters sold remove sediments and unwanted chemicals however, coffee machines require scale and hardness reduction. Most domestic taps and filters do not successfully reduce scale. We have carefully selected some of Australias best water filters for coffee machines below!