Description

This Bulletin outlines the requirements for potable and non-potable systems and explains the specification for collection, storage, filtering and treatment.

Rainwater collection systems can provide a source of water for a property. Many homes in New Zealand already rely on rainwater collected from their roofs, especially in areas where mains water is not available.

Residential rainwater systems can provide water suitable for drinking and food preparation, if it is filtered and/or treated adequately. Water can also be used for garden irrigation, swimming pools, toilet flushing, baths and showers.

Scope

The Bulletin includes:

• Introduction
• General requirements
  • Water supplies to homes
  • Potable water supplies
  • Non-potable water inside the home
  • Other considerations
• Specifications
  • Rainwater collection area
  • Gutters and pipework
  • Rainwater storage tanks
  • Filtering and treatment
  • Overflow and disposal of excess water
• Maintenance
• More Information