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Northern Adelaide Irrigation Scheme (NAIS)

Northern Adelaide Irrigation Scheme (NAIS)

The Northern Adelaide Irrigation Scheme (NAIS) is an opportunity to expand the use of recycled water for horticultural irrigation in the Northern Adelaide Plains. NAIS is a public/private partnership concept developed under the PIRSA led Northern Adelaide Plains Agribusiness Initiative.

SA Water released an Expression of Interest (EOI) to the market seeking innovative proposals to utilise 20 gigalitres (GL) per annum of recycled water from the Bolivar Wastewater Treatment Plant that can create the greatest economic benefit for the state.

The existing Virginia Pipeline Scheme currently delivers around 17 GL per annum  of recycled water each year. Around 400 irrigators use the recycled water. The Virginia Pipeline Scheme is currently owned and operated by Trility Pty Ltd.

Of the 20 GL allocated for the NAIS project, around 12 GL is available during wetter (winter) months. For irrigation, storage is necessary. SA Water is considering two broad storage options:

  • Above-ground storage in one or more holding ponds
  • Below-ground storage in the local aquifer (T2 Aquifer). This is a process called Managed Aquifer Recovery (MAR).

A Community Committee was established to work with SA Water to develop a plan for recycled water storage in the Northern Adelaide Plains.

The draft SA Water Guidelines for Recycled Water Storage in the Northern Adelaide Plains were developed as a result of the discussions with the Committee and released to the wider public for additional feedback.

Community consultation on the draft Guidelines has now closed. SA Water has begun incorporating community feedback and will publish a final version of the Guidelines that will be made available for the public.  

For the latest update on the NAIS project and additional information about recycled water in the Northern Adelaide Plains please read our December Newsletter

Read more about engagement with private enterprise and stakeholders.

  • 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
  • Murray Rd
  • Port Noarlunga
  • 26/03/2017
  • Supply Interruption
  • Estimated start time (water off): 28/03/2017 09:00 AM
    Estimated restore time (water back on): 28/03/2017 04:00 PM

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


  • See all scheduled works