Wastewater and stormwater

Wastewater that is cleaned, treated and purified and stormwater, when harvested and treated, can be recycled for many uses including watering parks and gardens, irrigating farms or used in industrial processes and manufacturing.  Recycled water is not used in NSW for drinking.


Wastewater is the water we have used in our homes, schools, businesses and industries. It goes down drains from sinks, baths, showers, laundries and toilets and other drains inside buildings.


Stormwater refers to the water resulting from rain draining into the stormwater system from roofs, roads, footpaths and other ground surfaces. Stormwater can include sewage from sewer overflows.

Water recycling

Water recycling refers to the treatment and reuse of sewage, greywater and/or stormwater, for non-potable (non-drinking) purposes.

NSW Health supports the reuse of treated wastewater provided the health risks are adequately managed.

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