# Water 1.1 Potable Water Use Reduction
# Applies to
All development
# Objective
To reduce total potable water use due through the use of efficient fixtures, appliances, and the use of rainwater.
# Summary
Points are awarded when the annual internal potable (mains) water consumption has been reduced by at least 25% against the reference case, as calculated by the in-built calculator or demonstrated via alternative modelling. Points are awarded as follows:
- >25% reduction (40% score)
- >40% reduction (60% score)
- >55% reduction (80% score)
- >70% reduction (100% score)
Efficient fixtures and appliances, rainwater use and recycled water use are included in the estimated potable water consumption for this credit. Refer to the Water Efficiency Labelling Scheme (WELS) to select fixtures and appliances or confirm the WELS rating for each item.
# Documentation & evidence required
Site / Floor plans showing:
- Notation regarding water efficient fixtures and appliances
- Rainwater tank(s), drawn at the correct size and labelled as connected to (X) number of toilets, irrigation or other re-use opportunities.
- Roof catchment area and connection to which tank
# Other Considerations
Applicants are encouraged to consider additional water saving strategies not currently included within the tool scoring, for example:
- Locating hot water units close to the point of use to reduce heat loss through pipes.
- Locating wet areas (bathrooms and laundries) and kitchens adjacent to each other
# Further Information
- WELS – Water Efficiency Labeling and Standards Scheme: (opens new window)
- NCC Plumbing Code of Australia: (opens new window)
- Rainwater Harvesting Association of Australia (opens new window)
- Rainwater use in urban communities. Guidelines for Non-drinking Applications in Multi-residential, Commercial and Community Facilities (opens new window)