Water efficiency in residential buildings
The NSW Building Sustainability Index (BASIX) sets standards for water and energy use and thermal performance for all new residential developments in NSW. It also applies to renovations valued at more than $50,000. The BASIX water standards play a crucial role in ensuring water security and resilience during drought.
Since BASIX was first introduced in 2004, there have been changes in how homes use water, community expectations for sustainability, our scientific understanding of climate change, and the government’s goals for managing water resources in cities. We are now reviewing the effectiveness of the BASIX water standards in this new context.
To assess the effectiveness of BASIX, the Department commissioned the University of Technology Sydney’s Institute for Sustainable Futures. This marks the first review of BASIX water since 2006.
Basix water review – Stage 1 report
More about the Sustainable Building State Environment Planning Policy development standards review can be found at: Sustainable Buildings SEPP
Water efficiency in rental properties
Landlords in NSW must ensure rental properties are water efficient if they wish to pass on water usage charges to their tenants. Requirements include that properties have no leaks and that showerheads, taps and toilets all meet set Water Efficiency Labelling and Standards (WELS) ratings.
Find out more about meeting the water efficiency measures at: How to improve water efficiency in rental properties
Water efficiency in non-residential buildings
Minimum water standards for large commercial development are included in NSW’s sustainability standards for non-residential development.
These standards are in Chapter 3 of the State Environmental Planning Policy (Sustainable Buildings) 2022 (the Sustainable Buildings SEPP).
Find out more about the sustainability standards for non-residential development here.
Water efficiency in government buildings
All new and existing government-owned and leased office buildings are required to achieve and maintain minimum NABERS ratings.
Find out more about the obligations here.
Water sensitive urban design
NSW promotes a consistent understanding and application of Water Sensitive Urban Design (WSUD) across the state. Taking a WSUD approach supports efficient and fit-for-purpose use of all water sources.
Learn more in the Water Sensitive Urban Design Guide.
Water efficiency labelling
The Water Efficiency Labelling and Standards (WELS) scheme, led by the Australian Government, helps you choose water-efficient products.
The plumbing products you buy today will likely be used for over 10 years, impacting your water and energy bills long term. Choosing water efficient products can help you save water and money.
Before industry sells or offers to supply products regulated under the WELS scheme, they must register those products. Everyone involved in the supply chain is responsible for making sure products are registered before they are supplied. This includes manufacturers, importers, wholesalers, retailers or building developers.
Find out more about WELS.