NCC 2019 Volume Three
Part B3 Non-drinking water services

Part B3 Non-drinking water services

Introduction to this Part

This Part sets out the requirements for the design, construction, installation, replacement, repair, alteration and maintenance of any part of a non-drinking water service of a property. It covers from the point of connection to the points of discharge.

Explanatory information:

Explanatory information:

OBJECTIVE

BO3

The Objective of this Part is to—

  1. safeguard people from illness, injury or loss (including loss of amenity) due to the failure of a non-drinking water installation; and
  2. ensure that a non-drinking water installation is suitable; and
  3. conserve water and energy; and
  4. safeguard the environment; and
  5. safeguard public and private infrastructure; and
  6. ensure that a non-drinking water installation throughout its serviceable life will continue to satisfy the requirements of Objectives (a) to (e).

FUNCTIONAL STATEMENTS

BF3.1

Sanitary fixtures, sanitary appliances and supply outlets provided with non-drinking water must be adequate.

BF3.2

Non-drinking water must be supplied through plumbing installations in a way that avoids the likelihood of inadvertent contamination of any drinking water service, minimise any adverse impact on building occupants, the Network Utility Operator's infrastructure, property and the environment.

Performance Requirements

BP3.1 Water supply

(1)

A non-drinking waterservice must only be connected to outlets clearly identified for non-drinking use.

(2)

A non-drinking water service must not have a cross-connection with a drinking water service.

BP3.2 Identification

(1)

Pipes, pipe outlets, fittings, storage and holding tanks that are part of a non-drinking water service must be clearly identified.

BP3.3 Design, construction and installation

(1)

Anon-drinking water service must ensure the following:

(a)

Non-drinking water is provided at required flow rates and pressures for the correct functioning of fixtures and appliances.

(b)

Access for maintenance of mechanical components and operational controls.

(c)

The system, appliances and devices can be isolated for testing and maintenance.

(2)

A non-drinking water service must be designed, constructed and installed to avoid uncontrolled discharge or failure.

Verification Methods

There are no Verification Methods in this Part.

Deemed-to-Satisfy Provisions

B3.1 Application

(1)

Performance RequirementsBP3.1 to BP3.3 are satisfied by complying with B3.2 and B3.3.

B3.2 Distribution of non-drinking water

(1)

A non-drinking water service must not be connected to any outlet that supplies water for—

(a)

human consumption; or

(b)

food preparation; or

(c)

food utensil washing; or

(d)

personal hygiene.

B3.3 General requirements

NSW B3.3(1)

Vic B3.3(1)

(1)

The design, construction, installation, replacement, repair, alteration and maintenance of a non-drinking water service must be in accordance with Section 9 of AS/NZS 3500.1.

Note 1:

Note 1:

The design, construction, installation, replacement, repair, alteration and maintenance of a non-drinking water service used for fire-fighting purposes must be in accordance with Part B4.

Explanatory information: Cross-volume considerations

Explanatory information: Cross-volume considerations
NCC Volumes One and Two deal with a number of areas of on-site construction which are relevant to sanitary non-drinking water service. These include, but may not be limited to, the following:

Item

NCC Volume One Class 2 to 9 buildings

NCC Volume Two Class 1 and 10 buildings

Excavations for pipework adjacent to a building and footings

B1 Structural provisions

3.1.1 Earthworks

Termite management for attachments to buildings and penetrations through a slab

B1 Structural provisions

3.1.4 Termite risk management

Penetrations for pipework through a vapour barrier

B1 Structural provisions

3.2.2 Preparation

Pipework in timber bearers and joists of solid timber or engineered wood products

B1 Structural provisions

3.4.0 Framing

Fittings, fixtures and pipework installations in steel framed construction

B1 Structural provisions

3.4.2 Steel framing

Penetrations through a fire-resisting wall or floor

C3 Protection of openings

3.7.3 Fire protection of separating walls and floors

Fixtures or fittings in a wet area

F1 Damp and weather proofing

3.8.1 Wet areas and external weatherproofing

Service pipework external to the building and penetrations through roof cladding in a bushfire prone area

G5 Construction in bushfire prone areas

3.10.5 Construction in bushfire prone areas

Pipework sound insulation

F5 Sound transmission and insulation

3.8.6 Sound insulation