Drinking water treatment

There are a variety of treatment systems that can remove contaminants in drinking water. However, not all treatment systems are able to remove both microbiological and chemical contaminants and a combination of different treatment systems may be required.

The suitable treatment system required can be determined from the source water quality.

Further information available on the following treatment methods:

Before purchasing a treatment system obtain the following information from the manufacturer/distributor:

  • Product specifications – including contaminants which it can remove
  • Product certifications
  • Maintenance requirements and costs
  • Operating costs

Emergency treatment of drinking water

In emergency or disaster situations where there are no alternative sources of drinking water available, refer to the Emergency Treatment of Drinking Water Supplies webpage (HealthyWA).

Treatment chemicals and substances in contact with drinking water

Treatment chemicals and materials which come in contact with drinking water are required to be certified for use in drinking water applications in Western Australia. For further information, refer to: Materials and Substances in Contact with Drinking Water (PDF 828KB).

More information on the WaterMark certification scheme, including a database of products certified under that scheme, is available via the Australian Building Codes Board (external site) website.

NB – Transition arrangements for plumbing products with a reduced level of lead commenced in May 2023 – please refer to the Watermark website (external site) for more details.

For information on the Australian Standards relevant to drinking water holding tanks, refer to A Compilation of Australian Standards on Water Holding Tanks (PDF 308KB).

Drinking water suppliers that disinfect water with chlorine must ensure they have the necessary permits to purchase poisons for use in a business or industrial purpose, as required under the Medicines and Poisons Act 2014 (external site).

For further details, please refer to Application forms for Licences and Permits and the Industrial Poisons Permit application form under the “Application forms” dropdown list on that page.

More information is available from the Therapeutic Goods Administration Scheduling Basics (external site).

Details about Safety Data Sheets are available from Safe Work Australia (external site).

Operational Guidance Documents

Last reviewed: 18-09-2023
Produced by

Public Health