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For a country where droughts are a regular weather feature and there is growing pressure on metropolitan water supply systems, relatively few rainwater and greywater systems are being installed. Despite the apparent benefits, rainwater collection systems are not a feature in most new urban houses. Greywater reuse systems are even rarer. Both types of systems are held back through cost issues, lack of knowledge, health concerns and, in some areas, local authority regulations.

Harnessing rainwater and greywater

This series of factsheets looks at how to harness rainwater and greywater, the benefits of such systems, and what is holding them back. The seven factsheets are: 

  1. Rainwater harvesting systems in New Zealand houses
  2. Greywater reuse systems for New Zealand houses
  3. Rainwater harvesting in non-residential buildings
  4. Water quality in New Zealand rainwater harvesting systems
  5. Benefits of rainwater and greywater systems in New Zealand houses
  6. What is holding back rainwater and greywater systems in New Zealand?
  7. Potential network savings from rainwater and greywater systems in New Zealand

Residential water use

For 87% of the New Zealand population, their drinking water, wastewater and stormwater disposal services are provided by the local city or district council or unitary authority. The first factsheet in this series outlines the charging structures that are used for these services. The factsheet is called:

  1. Residential water tariffs in New Zealand


 Factsheets - Water

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