Section B Water services
Part B1 Cold water services
Delete B1.4(1) and insert NSW B1.4(1) as follows:
NSW B1.4 General requirements
The design, construction, installation, replacement, repair, alteration and maintenance of cold water services must be in accordance with AS/NZS 3500.1 with the following additions:
After clause 5.3.2(k) add (l) as follows:
Where valves are located below ground within the property boundary, they shall be provided with a surface box and riser. The box lid shall be permanently marked with a "W".
Part B2 Heated water services
Delete BP2.6(3) and replace with NSW BP2.6(3) as follows:
NSW BP2.6 Energy use and source
Delete BV2.1 and insert NSW BV2.1 as follows:
NSW BV2.1 * * * * *
This clause has deliberately been left blank.
BV2.1 does not apply in NSW as the sources of energy for new Class 1 and 10 buildings are regulated under BASIX..
Delete B2.2 and insert NSW B2.2 as follows:
NSW B2.2 * * * * *
Delete B2.5(1)(a)(iv) and insert NSW B2.5(1)(a)(iv) as follows:
NSW B2.5 Maximum delivery temperature
any facility designated for use by people with a disability.
Delete B2.6(2)(d) and insert NSW B2.6(2)(d) as follows:
NSW B2.6 Temperature control devices
Temperature limited water heater with a maximum delivery temperature of 50 Deg marked in accordance with AS 3498.
After NSW Application 1 insert NSW Exemption 1 as follows:
NSW Application 1:
B2.6 applies to—
- all new heated water services; or
- replacing a hot water heater – regardless of the type of heater or location of the heater.
Delete Application 1 and insert NSW Application 1 as follows:
NSW Exemption 1:
A temperature control device need not be installed if one or more, but not all, heating units in a manifold water heater are replaced.
Part B3 Non-drinking water services
Delete B3.3(1) and insert NSW B3.3(1) as follows—
NSW B3.3 General requirements
The design, construction, installation, replacement, repair, alteration and maintenance of a non-drinking water service must be in accordance with the following:
AS/NZS 3500.1 with the following variations:
After clause 10.3(c) insert (d) and (e) as follows:
Top up from a drinking water supply shall be by an indirect trickle top up with a visible air gap external to the tank.
There shall be no connection between treated greywater systems and drinking water, rainwater or other sources of supply.
Part B4 Fire-fighting water services
Part B4 does not apply in New South Wales.
This Part does not apply in New South Wales as fire-fighting water services are regulated under the Environmental Planning and Assessment Act 1979 and Environmental Planning and Assessment Regulation 2000, which references the Building Code of Australia.
Part B5 Cross-connection control
After B5.4 insert NSW B5.501 as follows:
NSW B5.501 Cooling tower water service
Water systems permanently attached to cooling towers Backflow prevention shall be positioned so that —
cooling tower air gap must be measured from the rim of the cooling tower basin; and
if a drinking water service to the cooling tower passes through the basin, the service pipe must be provided with a double wall protection; and
if a fast fill connection is required, the fast fill line shall terminate externally to the unit, with an air gap over either the basin or a tundish.
See NSW Figure B5.501 Typical Cooling Tower Connections.
Part B6 Rainwater harvesting and use
After clause B6.4(1) insert NSW B6.4(2) as follows:
NSW B6.4 Buried and partially buried tanks
Buried and partially buried tanks must comply with section 16 of AS/NZS 3500.1 with the following variations—
After clause 16.3.3(c) add (d) and (e) as follows:
Single residential dwellings require the following:
Buried or partly buried rainwater tanks a non-testable dual check valve with atmospheric port is required for containment protection; and
A non-testable device for zone protection. The Network Utility Operator reserves the right to require greater backflow for containment.
Where rainwater tanks are installed for other than a single residential dwelling approval must be obtained from the water supply Network Utility Operator for containment.