NCC 2019 Volume Three
Section B Water services

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

(1)

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:

(a)

After clause 5.3.2(k) add (l) as follows:

(l)

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

Performance Requirements

Delete BP2.6(3) and replace with NSW BP2.6(3) as follows:

NSW BP2.6 Energy use and source

(3)

* * * * *

Explanatory information

Explanatory information

Compliance is not required with the national provisions of BP2.6(3) as the sources of energy for new Class 1 and 10 buildings are regulated under BASIX.

Verification Methods

Delete BV2.1 and insert NSW BV2.1 as follows:

NSW BV2.1 * * * * *

Explanatory information

This clause has deliberately been left blank.

Explanatory information

Explanatory information

BV2.1 does not apply in NSW as the sources of energy for new Class 1 and 10 buildings are regulated under BASIX..

Deemed-to-Satisfy Provisions

Delete B2.2 and insert NSW B2.2 as follows:

NSW B2.2 *  *  *  *  *

Explanatory information

This clause has deliberately been left blank.

Explanatory information

Explanatory information

Compliance is not required with the national provisions of B2.2 as the sources of energy for new Class 1 and 10 buildings are regulated under BASIX.

Delete B2.5(1)(a)(iv) and insert NSW B2.5(1)(a)(iv) as follows:

NSW B2.5 Maximum delivery temperature

(iv)

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

(d)

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:

NSW Application 1:

B2.6 applies to—

  1. all new heated water services; or
  2. 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:

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

(1)

The design, construction, installation, replacement, repair, alteration and maintenance of a non-drinking water service must be in accordance with the following:

(a)

AS/NZS 3500.1 with the following variations:

(i)

After clause 10.3(c) insert (d) and (e) as follows:

(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.

(e)

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.

Note:

Note:

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

(1)

Water systems permanently attached to cooling towers Backflow prevention shall be positioned so that —

(a)

cooling tower air gap must be measured from the rim of the cooling tower basin; and

(b)

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

(c)

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.

Note:

Note:

See NSW Figure B5.501 Typical Cooling Tower Connections.

NSW Figure B5.501 Typical Cooling Tower Connections
v3_NSWB12_2011.svg

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

(2)

Buried and partially buried tanks must comply with section 16 of AS/NZS 3500.1 with the following variations—

(a)

After clause 16.3.3(c) add (d) and (e) as follows:

(d)

Single residential dwellings require the following:

(i)

Buried or partly buried rainwater tanks a non-testable dual check valve with atmospheric port is required for containment protection; and

(ii)

A non-testable device for zone protection. The Network Utility Operator reserves the right to require greater backflow for containment.

(e)

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.