Water

Designing homes to use water efficiently, reduce costs and cope with more frequent droughts or storms.

Rainwater systems

Rainwater collection

  • reduce water costs for users on a metered water supply
  • provide an emergency supply
  • reduce demand on local authority water supplies
  • reduce demand on stormwater disposal systems
  • provide an independent supply for watering the garden in times of drought
  • reduce the rate of stormwater run-off.

Where households are not on a piped mains water supply, collecting and storing rainwater may be the sole source of water. In New Zealand, approximately 10% of the population depends on roof-collected rainwater for drinking water.

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