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Greywater

Greywater

Greywater is water that comes out of appliances (like washing machines and dishwashers) and from sinks, showers and bathtubs. Greywater does not include water from toilets.

Re-using greywater can save both water and money. But it can also be harmful to your health, and your garden, if it's not treated properly.

Greywater use is strictly regulated. Before you put in a system to recycle it, make sure you get all the approvals you need.

Greywater approval

You need to get approval for each part of your system: treatment, development and installation. Each approval comes from a different place. This process makes sure your system will protect both you and your environment.

For approval of the treatment process and use of greywater, you need to talk to SA Health.

The planning and development of proposed greywater systems is approved by local government.

You need approval to divert greywater from existing systems. If you are in a sewered area, or in an area with a Septic Tank Effluent Drainage (STED) scheme, you will need approval. To find out more about how to do that, contact SA Health

If you need to change your plumbing system, you need approval from the Office of the Technical Regulator (OTR). Make sure you have all approvals before you do this. You can contact the Office of the Technical Regulator here.

Ways to use greywater

Most people who use greywater use it to water their gardens. If you want to do this too, make sure you:

  • don't use greywater on plants that might be eaten raw
  • don't use greywater from your kitchen in your garden.

Kitchen greywater contains harmful micro-organisms and small particles. Using it in your garden may block up your irrigation system.

Greywater should not be used to flush your toilet. This is because when you flush the toilet you create an aerosol-like effect. Treating the water to a certain level protects your health. Additionally, some problems have been experienced with toilet cisterns operating on greywater due to microbial growth interfering with the flushing operation.


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  • Major faults

  • Reported

  • Various suburbs
  • 15/03/2017
  • Water Quality
  • Some Adelaide Hills customers may notice changes in the taste and/or smell of their tap water, as we work hard to reduce the impact of an algal bloom in the Summit Reservoir.
    The algal bloom is causing a naturally occurring compound called geosmin, which can affect water taste and odour, but is harmless to health. The water remains safe to drink.
    We expect customers in the following areas may notice this change: Mount Barker, Balhannah, Oakbank, Verdun, Hahndorf, Heathfield, Stirling, Crafers, Lenswood, Lobethal, Woodside, Brukunga, Mount Torrens, Birdwood, Gumeracha, Kersbrook, Cudlee Creek, Wistow, Nairne, Littlehampton, Strathalbyn, Clayton, Milang, Langhorne Creek and Bridgewater.
    We have made changes to our treatment processes at the Summit Water Treatment Plant to reduce the level of geosmin in the water.    
    Our testing shows no algae has been detected in the network and it has been completely removed as part of our normal treatment process.
    If our customers have any questions or concerns, please contact us on 1300 SA WATER.
  • See all major faults

  • Scheduled works

  • Underway
  • Farnsworth Dr
  • Morphett Vale
  • 28/04/2017
  • Supply Interruption
  • Estimated start time (water off): 02/05/2017 09:00 AM
    Estimated restore time (water back on): 02/05/2017 04:00 PM

    We’re committed to improving your services and are undertaking maintenance work in Morphett Vale. Water supply in the surrounding area may be impacted during the above times. Traffic restrictions may also apply.


  • See all scheduled works