 At Godley lime is added to remove manganese, and the water is filtered and chlorinated and fed into the distribution network.In the 1960s, part of the Longdendale aqueduct was replaced with 1200mm diameter pipes.In 1990 the Hollingworth Reservoir (now part of Swallows Wood nature reserve) was decommissioned and levelled and waters from the Ogden Brook fed into Arnfield.