This flocculating agent binds together the impurities, which sink and are removed in sedimentation tanks. At Godley, lime is added to remove manganese, and the water is filtered and chlorinated and fed into the distribution network.
The process involves using a flocculating agent to gather impurities, causing them to settle in sedimentation tanks.  At Godley, lime is used to remove manganese before filtering and chlorinating the water for distribution.