Drinking water monitoring and testing

Naturally sourced water can be contaminated in many ways. Testing of the water is a key way to determine if the water is safe to drink.

Private domestic household drinking water systems

A standard drinking water test is available for householders and small private systems. 

For the correct technique to take a water sample for microbiological testing, refer to Standard drinking water sampling technique - microbiological (PDF 299KB).

For information about the approach to be followed to establish the level and extent of chemical contamination in plumbing within a newly commissioned or substantially modified building or structure, please refer to Drinking Water Sampling for Buildings - Commissioning (PDF 262KB).

Reticulated drinking water scheme providers and minesites

Reticulated drinking water scheme providers and minesites are required to establish a monitoring program that meets the Australian Drinking Water Guidelines (external site). For further information, refer to the industry specific webpages:

Interpretation of drinking water quality results

The Environmental Health Directorate of the Department of Health WA will be able to assist you in interpreting your drinking water quality results. We can be contacted on (08) 9222 2000 (business hours) or by email to ehinfo@health.wa.gov.au.

Laboratories will not be able to provide you with health advice as they are not accredited to do so.

Information for sampling agencies

As of 1 July 2012, thermotolerant coliforms will be replaced by E. coli in the assessment for compliance of microbiological quality in drinking water.

For more information on changes in analytical techniques, reporting and response requirements, refer to the E. coli and drinking water quality (external site).

Information for Laboratories

For further information on testing methodology visit the webpage for laboratories.
Last reviewed: 17-06-2016
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