NCC 2022 Volume Two - Building Code of Australia Class 1 and 10 buildings
Filter
H9
SA Part H9 Water efficiencySA Part H9 Water efficiency
Introduction to this Part
This Part contains additional requirements for water efficiency.
Objectives
NCC Blurbs
The Objective of this Part is to efficiently use all available water supplies.
NCC Title
Objective
NCC State
SA
NCC SPTC Current
Objective
Building Classes
2,3,4,5,6,7a,7b,8,9a,9b,9c
Functional Statements
NCC Blurbs
A building is to be constructed in a way that efficiently uses all available water supplies to reduce the amount required from the mains reticulated water supply.
NCC Title
Water efficiency
NCC State
SA
NCC SPTC Current
Water efficiency
Building Classes
2,3,4,5,6,7a,7b,8,9a,9b,9c
Performance Requirements
NCC Blurbs
A building must provide an additional water supply (other than the mains reticulated water supply) which must be plumbed to at least a water closet or a water heater or all the cold water laundry outlets.
NCC Title
Water efficiency
NCC State
SA
NCC SPTC Current
Water efficiency
Building Classes
2,3,4,5,6,7a,7b,8,9a,9b,9c
Deemed-to-Satisfy Provisions
NCC Blurbs
Compliance with SA H9D2 to SA H9D6 for water efficiency satisfies Performance Requirement SA H9P1.
NCC Title
Deemed-to-Satisfy Provisions
NCC State
SA
NCC SPTC Current
Deemed-to-Satisfy Provisions
Building Classes
2,3,4,5,6,7a,7b,8,9a,9b,9c
NCC Blurbs
- the roof catchment area is 50 m2 or more; and
- the building or extension is located in a Council area, excluding the Municipal Council of Roxby Downs and the District Council of Coober Pedy; and
- for an extension, where it incorporates a water closet or a water heater or laundry cold water outlet.
NCC Title
Application of Part
NCC State
SA
NCC SPTC Current
Application of Part
Building Classes
2,3,4,5,6,7a,7b,8,9a,9b,9c
NCC Blurbs
- collected by a drainage system complying with H1D7; and
- stored in a rainwater tank, the storage capacity of which is not less than 1 kilolitre (1000 litres); and
- plumbed to at least a water closet or a water heater or all laundry cold water outlets.
Explanatory information
SA H9D3 requires the rainwater tank to be plumbed to a water closet, water heater or all laundry cold water outlets. The Office of the Technical Regulator regulates plumbing work in South Australia under the Water Industry Act 2012, including plumbing the rainwater tank to the water closet, water heater or laundry cold water outlets. Stormwater connections, including from the roof to the rainwater tank, and from rainwater tank overflow, are regulated by the local council or relevant authority under the Planning, Development and Infrastructure Act 2016.
NCC Title
Rainwater tank capacity
NCC State
SA
NCC SPTC Current
Rainwater tank capacity
Building Classes
2,3,4,5,6,7a,7b,8,9a,9b,9c
NCC Blurbs
The rainwater tank must be fitted with an overflow device that disposes of overflow from the rainwater tank in accordance with—
- any specific requirements of the relevant authority; and
- Part 3.3 of the ABCB Housing Provisions.
NCC Title
Rainwater tank overflow
NCC State
SA
NCC SPTC Current
Rainwater tank overflow
Building Classes
2,3,4,5,6,7a,7b,8,9a,9b,9c
NCC Blurbs
The inlet and overflow of the rainwater tank must be fitted with mosquito proof, non-degradable screens.
Explanatory information
SA H9D5 requires the fitting of mosquito proof, non-degradable screens to the rainwater tank. The quality of the water stored in the rainwater tank should be managed in accordance with the Department of Health publication ‘Guidance on the use of rainwater tanks’.
NCC Title
Rainwater tank water quality
NCC State
SA
NCC SPTC Current
Rainwater tank water quality
Building Classes
2,3,4,5,6,7a,7b,8,9a,9b,9c
NCC Blurbs
Where a rainwater tank is supported on a stand or other structure, the supporting structure must comply with clause 2.2.2 of the ABCB Housing Provisions.
NCC Title
Rainwater tank stands
NCC State
SA
NCC SPTC Current
Rainwater tank stands
Building Classes
2,3,4,5,6,7a,7b,8,9a,9b,9c