From 1954 until 1987 all the treatment of water supplied from Kaitoke - to the upper Hutt Valley, Porirua and Wellington's northern and western suburbs happened here. The sand trap and rotary strainers housed here are still in use as the first stage of treatment for the Kaitoke supply, which provides almost half of all the water used in the region's four cities.
From Kaitoke Weir, water flows by gravity down a 700 metre tunnel and over the Hutt River by a flume bridge to reach Kaitoke Strainer House. On a typical day around 70 million litres of water pass through the sand trap and strainers. Water passes from the inside to the outside of each drum-shaped strainer and any matter caught is washed off into a waste pipe as the drum rotates.
Once through the strainers, water is piped to Te Marua Treatment Plant where it is treated to Ministry of Health quality standards before being distributed to enclosed reservoirs. On a typical day 150 million litres of high quality water (four baths per person) is provided from a network including four modern treatment plants, 15 pumping stations and 180 kms of pipes.
The cache is 200ml Sistema container in a camo bag. Please bring your own pen.
Placed by a member of The Kiwicaching Association of NZ