Ranfurly

The Ranfurly treatment plant consists of sand filtration and chlorination. This provides treatment for bacteria, but not protozoa.

The source water for Ranfurly is from two locations on the East Eweburn River. This is a surface water source and is vulnerable to turbidity following rain. When this occurs, the plant is shut down, treated water is supplied from reservoirs. and a conserve water notice is put in place.

At normal water demand, Ranfurly has several days storage in the reservoir.

Council is investigating options to provide a resilient and compliant water supply for Ranfurly. There are turbidity and quantity issues with the existing source water which has required other sources to be investigated.

A business case is being developed and Council will consider the options within the next three months. Significant investment, in the range of $20-25 million will be required to build a new Ranfurly plant with a new water source.