A mixture of manganese dioxide and sand in a filter bed will normally reduce the concentration of manganese and iron in water from 0.5mg/l and 3mg/l to 0.02mg/l and 0.05mg/l respectively (given the correct conditions of alkalinity and pH). In Ireland certain regions are more prone to high levels of Manganese in the water.
Manganese Dioxide can also be used to treat plants and it has proved very effective.
Technical Information