The minerals in the water are in ionic form. As with most activated carbon filters, minerals in this form are not retained and therefore pass through.

The Ultimate Star Filter® is designed to remove pollutants from water that are harmful to health, but their design allows the minerals to remain in the filtered water.

When you drink water filtered by our systems, you are choosing water that is purified, healthy and pure, while retaining the minerals originally present in the water.

The Ultimate Star Filter® does not filter limescale either. Read our explanation of limescale filtration for more information.