WaterMark Information

Guaranteed Quality!

The WaterMark Certification Scheme (Scheme) is a mandatory certification scheme for plumbing and drainage products to ensure they are fit for purpose and appropriately authorised for use in plumbing and drainage installations. These materials and products are certified and authorised for use through The Scheme.


According to the National Construction Code (NCC) Volume Three, certain plumbing and drainage materials must be certified and authorised for use in a plumbing or drainage installation. The certification is managed and administered by The Australian Building Codes Board (ABCB). Products and materials that are marked with the WaterMark™ trademark are certified to be adequate and safe to use in plumbing and drainage systems in Australia.


Waterborne diseases, such as cholera, typhoid, and dysentery, can be spread as a result of improper plumbing system design and maintenance. The WaterMark™ Certification Scheme ensures that all plumbing and drainage materials and products are fit for purpose and appropriately authorised for use. This leads to superior plumbing installations for the benefit of public health and safety. As a result, Australia enjoys some of the safest water and waste systems in the world.


The WaterMark™ Certification Scheme is managed and administered by the Australian Building Codes Board (ABCB). Without this certification you cannot claim any rebates offered by State or Federal schemes relating to installation of a water tank. Please check with local council Please also make sure your plumber is also fully licensed by the Master Plumbers Association.For any offers or rebates please contact your local council.

In order to achieve Watermark Certification, the subject material or product must:

  • be tested by an accredited testing laboratory;
  • comply with an approved specification (either a relevant existing standard or an approved WaterMark Technical Specification);
  • be manufactured in accordance with an approved Quality Assurance Program;
  • carry a warranty.

Materials and products complying fully with the applicable requirements of the WaterMark Certification Scheme are then eligible to be certified by a WaterMark Conformity Assessment Body and listed on the Australian Building Codes Board’s [ABCB’s] WaterMark Product Database. Certified materials and products are identifiable by the WaterMark trademark, which must be displayed on the material or product upon the granting of a WaterMark Certificate of Conformity.The WaterMark Certification Scheme provides a nationally consistent, risk based certification scheme for ensuring the quality of certain materials and products used in plumbing and drainage installations.