Construction of this filter plant at Turitea began at the same time as the construction of the second dam at Turitea, but was completed in April 1913 because of supply delays and labour shortages. The plant was needed to combat the high number of complaints to the Borough Council about the colour and taste of the water from the dam. See http://www.pncc.govt.nz/media/30185/turiteawatersupplybook.pdf for more information about the dam and the filter plant.