This  Standard  incorporates  Amendment  No. 1  (July  2019).  The  changes  required  by  the  
Amendment are indicated in the text by a marginal bar and amendment number against the
clause, note, table, figure or part thereof affected.

The objective of this Standard is to provide installers with Deemed to Satisfy solutions to
comply with—

(a)  the National Construction Code of Australia (NCC), Volume Three, Plumbing Code
of Australia (PCA); and
(b)  the New Zealand Building Code (Clause G12, Water Supplies).

This Standard is part of a series for plumbing and drainage, as follows:
AS/NZS
3500  Plumbing and drainage
3500.0  Part 0: Glossary of terms
3500.1  Part 1: Water services (this Standard)
3500.2  Part 2: Sanitary plumbing and drainage
3500.3  Part 3: Stormwater drainage
3500.4  Part 4: Heated water systems

The  objective  of  this  revision  is  to  update  requirements  relating  to  backflow  prevention,
plastic  pipes  in  direct  sunlight,  circulatory  heated  water,  non-drinking  water  and
clarification for jointing methods.

Some  materials  and  products  used  in  a  water  service  are  provided  with  instructions  for
installation  and  use.  Whilst  not  a  requirement  of  this  Standard ,  or  acceptable  as  an
alternative to the requirements of this Standard, conformance to these instructions generally
ensures that—

(i)  the material or product is fit for the application;
(ii)  the performance of the system is not degraded;
(iii)  the durability of the material or product is not impaired; and
(iv)  the manufacturer’s warranty remains valid.

Provision For Revision:

This Standard necessarily deals with existing conditions, but is not intended to discourage
innovation or to exclude materials, equipment and methods that may be developed in future.
Revisions will be made from time to time in view of such developments and amendments to
this Edition will be made only when absolutely necessary.

The  terms  ‘normative’  and  ‘informative’  have  been  used  in  this  Standard  to  define  the
application of the appendix to which they apply. A ‘normative’ appendix is an integral part
of a Standard, whereas an ‘informative’ appendix is only for information and guidance.

Statements expressed in mandatory terms in notes to figures and tables are deemed to be
requirements of this Standard.

Notes  used  in  this  Standard  are  of  an  advisory  nature  only  and  are  used  to  provide
explanation  or  guidance  to  the  user  on  recommended  considerations  or  technical
procedures, or to provide an informative cross-reference to other documents or publications.
Notes to clauses in this Standard do not form a  mandatory part for compliance with this
Standard.

First published as AS 3500.1-1990. Second edition 1992. Jointly revised and redesignated AS/NZS 3500.1.2:1998. Jointly revised and redesignated AS/NZS 3500.1:2003. Third edition 2018. Reissued incorporating Amendment No. 1 (July 2019).