NSW Water Regulations
Installing a water tank in New South Wales (NSW) requires understanding key regulations to ensure compliance and efficiency. The Building Sustainability Index (BASIX) is a government initiative designed to improve the environmental performance of new homes by setting water and energy efficiency standards.
BASIX mandates a 40% reduction in potable water use compared to pre-BASIX levels, with targets tailored to different regions based on climate, rainfall, and water consumption trends. Rainwater tanks are crucial in meeting these targets in many areas by providing a sustainable water source for household use, including toilets, washing machines, and irrigation.
To comply with BASIX, the tank’s capacity and roof catchment area must meet specified criteria. A larger roof area connected to the tank increases the efficiency of rainwater collection. Proper overflow management is also required to prevent drainage issues and align with local stormwater regulations.
Local councils may have additional requirements beyond BASIX. In many parts of NSW, tanks with a capacity of up to 10,000 litres generally do not require council approval if they meet specific guidelines. However, it’s essential to check with your local council and refer to the latest NSW Housing Code for detailed regulations.
Additional considerations apply if rainwater is used for indoor purposes such as laundry or toilets, including backflow prevention devices and appropriate plumbing connections. Water tanks must be installed on a stable foundation and positioned away from water and wastewater mains, as they become extremely heavy when full.
By adhering to these regulations, you can ensure compliance, enhance water efficiency, and support NSW’s commitment to sustainability. For more details, refer to the BASIX Water Review – Stage 1 and Sydney Water’s information page for Sydney-specific requirements.