Using Non-potable Water In Your Business

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• Using non-potable water

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Using non-potable water

Businesses generally obtain their water from the drinking water (potable water) supply mains. However, in many cases it is possible to use non-potable water for certain purposes (e.g. flushing toilets). Using non-potable water for selected purposes can reduce your water bills and make your business more environmentally sustainable.

The quality of non-potable water will vary depending on its source and the level of treatment applied and so may contain biological hazards such as bacteria, viruses, or chemical and metal residues. It is therefore important to weigh up the risks and benefits.

Types of non-potable water

Non-potable water sources can include the following:

• Recycled water is water that has been used and is then supplied for reuse, either treated or untreated. Recycled water may be sourced from sewage (wastewater treatment plants) or process water streams.
• Stormwater is the run-off from roofs, roads, driveways and other hard surfaces. Stormwater must generally be treated for use. Water caught in rainwater tanks is suitable for some uses.
• Greywater is wastewater generated from showers and laundries. Greywater may be used treated or untreated, depending on its use.

Risk management and safety

The person in control of the workplace must manage any risks from the use, handling, storage, and transport of non-potable water at the workplace.

Under the Work Health and Safety Act 2011, manufacturers, suppliers and users of non-potable water in a workplace have an obligation to prevent death, injury or illness caused by the water.

Read more about non-potable water.

Find out more about your obligations for keeping your workplace safe, and how to address the risks associated with using non-potable water in your risk management plan.

State government agencies in Queensland with regulatory responsibilities for the use of non-potable water include:

• Workplace Health and Safety Queensland – using non-potable water in the workplace
• Department of Housing and Public Works – using greywater
• Queensland Health – using non-reticulated water in a food business
• Safe Food Queensland.

Enquiries

General enquiries: 13 QGOV (13 74 68)

• Previous Creating a waterwise workplace
• Next Water restrictions

• Last reviewed: 23 Jan 2023
• Last updated: 14 Jul 2025

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