Water conservation or a new water source
We collect, treat and deliver water to the cities of Lower Hutt, Porirua, Upper Hutt and Wellington. At current estimates of population growth, we will reach our supply limit within two to three years. Some enhancements, costing up to $6 million, will provide a solution for a few years. The Plan provides for investigative work of a major new water source, potentially costing up to $102 million. We will have the costs refined in about a year.
However, if people reduce their water consumption, a new water source may not be required so soon. The water supply growth rate is about one percent a year, so reducing consumption by one percent a year through using water more wisely will put off the need for a new water source.
This issue generated widespread interest from submitters, with most advocating for increased effort in promoting water conservation. Submitters were divided on the issue of water metering to reduce demand. We are preparing a comprehensive Water Supply Management Plan with the four city councils who are our customers. This will cover new conservation initiatives.
Nevertheless, as the region’s population grows, it is prudent to prepare for a new source in case it’s needed in 10, 15 or even 20 years time.