Eden Valley water supply investigation

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Eden Valley sits between our Swan Reach to Paskeville pipeline to the north and the Mannum to Adelaide pipeline (MAPL) to the south. The MAPL system provides raw water to the South Para Reservoir which in turn feeds the Barossa Reservoir and Water Treatment Plant, as well as being a primary source for water supplies into metropolitan Adelaide. The investigation into water supply for Eden Valley is considering the options for using existing water sources and supply systems to meet longer term existing and projected future demand across metropolitan and regional areas.

Currently, Eden Valley relies on ground and catchment water allocations. Scenarios that bring an additional water supply to the area to enable the irrigation of vineyards and meet primary production requirements are being investigated.

To inform our investigation, we sought a better understanding of current water use patterns, storage requirements and plans for growth in the region if a new water supply should become available. Surveys of growers and producers in January and May 2020 received a strong, positive response and the information gathered is a crucial input to our water system planning investigation.

Current status

SA Water, in partnership with the Barossa Grape and Wine Association (BGWA) has now prepared four high-level concept plans showing high level infrastructure requirements to bring raw water from the Mannum to Adelaide Pipeline (MAPL) into Eden Valley and surrounding areas.

The four concept plans can be found here or in the Document library section, to the right, called Eden Valley concept design options.

Each concept plan is based on the supply of 3.2 Gigalitres of water initially to meet water demands to the respondents to the SA Water and BGWA surveys last year.

Based on preliminary feedback from BGWA, the options have been prepared and are illustrated on the plans.

The cost estimates provided in the table below are a desktop level class of estimate, with significant contingency allowance, and adopting a number of assumptions which have not been validated through any on-ground investigations. Some of the major assumptions that have been made are:

  • That a significant amount of rock would be encountered during construction
  • The chosen alignment follows road corridors, some of which contain significant trees and sensitive native vegetation requiring costly construction techniques
  • No detailed site surveys have been completed therefore a pipeline material capable of dealing with higher system pressure has been adopted

Scheme Options

Scope Overview

Desktop level class of estimate (million)

Full Scheme

  • Approximately 153 km of pipeline
  • 1 x pump station, 1 x booster pump station
  • 5 x Storage tanks

$370m

Transfer main only

  • Approximately 29 km of pipeline
  • 1 x pump station
  • 1 x storage tank

$134m

Transfer and ring main (large)

  • Approximately 54 km of pipeline
  • 1 x pump station, 1 x booster pump station
  • 5 x storage tanks

$160m

Transfer and ring main (small)

  • Approximately 46 km of pipeline
  • 1 x pump station, 1 x booster pump station
  • 3 x storage tanks

$152m


Apart for the Full Scheme, the scheme options listed are based on SA Water delivering and maintaining ownership of portions of the scheme. Landowners will be required to jointly coordinate, develop and deliver private network infrastructure to supply water to the farm gate of all survey respondents.

SA Water continues to liaise with PIRSA to coordinate both the raw water and recycled water options for Eden Valley.

Next Steps

A further update will be provided including on the status of Central System review as soon as possible after validating data and confirming timing for when major upgrades may be required.

Eden Valley sits between our Swan Reach to Paskeville pipeline to the north and the Mannum to Adelaide pipeline (MAPL) to the south. The MAPL system provides raw water to the South Para Reservoir which in turn feeds the Barossa Reservoir and Water Treatment Plant, as well as being a primary source for water supplies into metropolitan Adelaide. The investigation into water supply for Eden Valley is considering the options for using existing water sources and supply systems to meet longer term existing and projected future demand across metropolitan and regional areas.

Currently, Eden Valley relies on ground and catchment water allocations. Scenarios that bring an additional water supply to the area to enable the irrigation of vineyards and meet primary production requirements are being investigated.

To inform our investigation, we sought a better understanding of current water use patterns, storage requirements and plans for growth in the region if a new water supply should become available. Surveys of growers and producers in January and May 2020 received a strong, positive response and the information gathered is a crucial input to our water system planning investigation.

Current status

SA Water, in partnership with the Barossa Grape and Wine Association (BGWA) has now prepared four high-level concept plans showing high level infrastructure requirements to bring raw water from the Mannum to Adelaide Pipeline (MAPL) into Eden Valley and surrounding areas.

The four concept plans can be found here or in the Document library section, to the right, called Eden Valley concept design options.

Each concept plan is based on the supply of 3.2 Gigalitres of water initially to meet water demands to the respondents to the SA Water and BGWA surveys last year.

Based on preliminary feedback from BGWA, the options have been prepared and are illustrated on the plans.

The cost estimates provided in the table below are a desktop level class of estimate, with significant contingency allowance, and adopting a number of assumptions which have not been validated through any on-ground investigations. Some of the major assumptions that have been made are:

  • That a significant amount of rock would be encountered during construction
  • The chosen alignment follows road corridors, some of which contain significant trees and sensitive native vegetation requiring costly construction techniques
  • No detailed site surveys have been completed therefore a pipeline material capable of dealing with higher system pressure has been adopted

Scheme Options

Scope Overview

Desktop level class of estimate (million)

Full Scheme

  • Approximately 153 km of pipeline
  • 1 x pump station, 1 x booster pump station
  • 5 x Storage tanks

$370m

Transfer main only

  • Approximately 29 km of pipeline
  • 1 x pump station
  • 1 x storage tank

$134m

Transfer and ring main (large)

  • Approximately 54 km of pipeline
  • 1 x pump station, 1 x booster pump station
  • 5 x storage tanks

$160m

Transfer and ring main (small)

  • Approximately 46 km of pipeline
  • 1 x pump station, 1 x booster pump station
  • 3 x storage tanks

$152m


Apart for the Full Scheme, the scheme options listed are based on SA Water delivering and maintaining ownership of portions of the scheme. Landowners will be required to jointly coordinate, develop and deliver private network infrastructure to supply water to the farm gate of all survey respondents.

SA Water continues to liaise with PIRSA to coordinate both the raw water and recycled water options for Eden Valley.

Next Steps

A further update will be provided including on the status of Central System review as soon as possible after validating data and confirming timing for when major upgrades may be required.

Ask us a Question

We are undertaking a comprehensive water supply investigation for the Eden Valley area.

You are invited to join the conversation and tell us what's important to you.

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  • Share on Facebook Share on Twitter Share on Linkedin Email this link

    Hi I know it is early in the development but do you have a timeline for final delivery to Eden Valley region?

    SIMON SORBY ADAMS asked 2 months ago

    Hi Simon

    Thanks for your message. At this stage, the options are conceptual only, with many steps to work though over the coming months, including finalising assessment for the central system to ensure sufficient source water capacity.

    At this stage, we do not have a timeframe of when the preferred option could be delivered.

    Kind regards

    Aaron Glossop - SA Water

  • Share on Facebook Share on Twitter Share on Linkedin Email this link

    I was advised that diagrams of pipeline routes for 4 options for E/V were available on this site. I cannot locate this data?

    VicPatrick asked 2 months ago

    Hi.

    Apologies for the time it has taken to provide an update. We have now updated this site which now includes a number of different options. 

    Kind regards

    Aaron Glossop - SA Water