NCC 2022 Volume Three - Plumbing Code of Australia
Classification
Building class 1a Building class 1b Building class 2 Building class 3 Building class 4 Building class 5 Building class 6 Building class 7a Building class 7b Building class 8 Building class 9a Building class 9b Building class 9c Building class 10a Building class 10b Building class 10c

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Classification
Building class 1a Building class 1b Building class 2 Building class 3 Building class 4 Building class 5 Building class 6 Building class 7a Building class 7b Building class 8 Building class 9a Building class 9b Building class 9c Building class 10a Building class 10b Building class 10c

B3

Part B3 Non-drinking water services

Part B3 Non-drinking water services

NSW B3D3 General requirements2019: NSW B3.3

Delete clause B3D3 and insert NSW B3D3 as follows:

A non-drinking water service must be in accordance with AS/NZS 3500.1 with the following additions to clause 10.3—

  1. 10.3(d): Top up from a drinking water supply shall be by an indirect trickle top up with a visible air gap external to the tank; and
  2. 10.3(e): There shall be no connection between treated greywater systems and drinking water, rainwater or other sources of supply.