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Water Supply

Water supply

Essential services
Healthy community

  • Collect water from the Hutt, Wainuiomata and Orongorongo catchments and the Waiwhetu aquifer for public drinking water supply.
  • Treat water so that it meets the Ministry of Health's standards for drinking water.
  • Deliver water to the cities of Lower Hutt, Upper Hutt, Porirua and Wellington.
  • Assess the demand for water – now and in the future – and plan how such demands will be met, including developing future sources.

Healthy environment

  • Encourage people to use water wisely.
  • Manage catchments so that water treatment plants receive good quality water.

Prepared community

  • Maintain our pipes and plants, and build resilience in the system so that water can continue to be supplied after an emergency – or restored as quickly as possible.
  • Work with city councils to plan how water will be delivered to the community following an emergency event that disrupts supply.

Key projects for 2008/09


Activity: Collect, treat and deliver water

  • Supply water to our four Wellington metropolitan city council customers that complies with the New Zealand Drinking Water Standards: 2005. This includes chemical, aesthetic and microbiological compliance
  • Ensure that the gradings of our water treatment plants are maintained. Two are graded A1 – the highest grading. Waterloo is graded B – the highest grading possible because chlorine is not added as requested by the Hutt City Council
  • Ensure that there is sufficient water to meet the community’s expectations in all reasonable circumstances, other than in an extreme drought, with a return period of 50 years or more. In 2007/08 the return period was 35 years
  • Undertake a water conservation programme over the summer of 2008/09 to promote wise water use, particularly in regard to watering gardens
  • Ensure that all resource consents are complied with as part of our environmental commitment
  • Manage vegetation and control pests in the Council-owned water catchments to ensure that high-quality water enters our water treatment plants, thereby making treatment less expensive with less risk
  • Publish a comprehensive business report on Greater Wellington’s water supply activities which will be made available to our four Wellington metropolitan city council customers, and also distributed to public libraries and published on Greater Wellington’s website. This is in addition to Greater Wellington's annual report

Activity: Plan to meet current and future demands for water

  • Consider options for supplying water to our growing population. These options may include a new dam and/or water conservation measures and domestic metering
  • Maintain our water supply assets. Capital expenditure of $4,565,000 has been provided in 2008/09 to either replace existing assets or acquire new assets

Activity: Plan for emergencies

  • Improve the security and reduce the risks to our water supply, eg, by providing secondary emergency points of supply to the city customers
  • Set aside $750,000 for self-insurance of the water pipelines, Stuart Macaskill Lakes and pipeline tunnels

Download

Download the Water Supply (PDF, 230KB)section of the Annual Report, which includes key projects, key changes, short-term goals and the funding breakdown.

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