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Water Use and Reuse Stream Projects

Aquifer Storage Transfer and Recovery (ASTR) – Drinking water from urban stormwater and a brackish aquifer

ECOS article 138 | AUG–SEP | 2007 "Reclaimed water that’s good enough to bottle" (PDF, 220 kB)

Media Release, 29 August 2006 - Securing South Australia's water resources - The Prime Minister announces joint federal, state, local government and private funding for the Waterproofing Northern Adelaide project. The project will capture 17 gigalitres of stormwater per year, cleanse it in wetlands, and inject it into the Northern Adelaide Plains aquifer for storage and reuse (ASR). ASR is a product of CSIRO Land and Water and partners' research.
Brochure March 2007 (PDF, 1.2 MB)

Introduction

This project aims to be the first of its type in the world whereby urban stormwater harvested from an engineered wetland is injected into an aquifer and recovered as water fit for continuous sustainable supply at potable water quality.

The project builds on previous experience in aquifer storage and recovery (ASR) research projects that have been conducted in South Australia over 10 years involving stormwater, reclaimed water and potable water, and on advances in hazard analysis and critical control points (HACCP) methods in managing distributed water systems, which will enable replication elsewhere. Whereas traditional ASR uses the same well for injection and recovery, ASTR uses separate wells to extend the residence time and travel distance within the aquifer and enhance attenuation of chemical and microbial contaminants. This project is also particularly relevant in the South Australian context, given the State Government aims of reducing demand on the River Murray and the Water Proofing Adelaide strategy.

Stormwater catchment supplying the ASTR site and for which a HACCP plan is being developed iteratively. Green is open space and purple is urban residential and industrial.  (Satellite photo image used with permission of TerraServer.com©Objectives/Scope

  • to evaluate the performance of aquifer injection and recovery systems that store passively treated stormwater in aquifers for recovery at potable quality on a sustainable basis
  • to determine HACCP procedures to apply to catchments, detention storages, injection systems, monitoring wells and recovery wells to identify siting, design (eg well spacing), planning, land management, monitoring and operational requirements for wider scale implementation
  • to document the results of the trial system and write a technical manual to address Australian requirements
  • to conduct workshops and demonstrations repackage the manual to address needs of those using them in those developing countries.

Activities

  • Licence Prep & Prelims
  • aquifer hydraulic evaluation & tracers
  • modelling local heads, salinity, paths for design & operation
  • model of wetland treatment
  • geochem studies inc coring, mineralogical analyses, modelling
  • fate of organics -aquifer & wetland
  • fate of pathogens - aquifer & wetland
  • model of aquifer treatment
  • revising HACCP
  • data compilation, data management, quality control
  • final report preparation, editing, and revising, publishing

Key CSIRO Staff

Peter Dillon, Simon Toze, Joanne Vanderzalm, Karen Barry, Elise Bekele, Peter Cook

Solute transport modelling assists in designing layout of injection and recovery wells.  Here the freshwater plume is shown (red), mixing with the native brackish groundwater (blue)Project Consortium

  • The ASTR (Aquifer Storage Transfer & Recovery) Project
  • The City of Salisbury
  • CSIRO Land & Water
  • United Water International Pty Ltd (UWI)
  • Northern Adelaide & Barossa Catchment Water Management Board (NABCWMB)
  • South Australian Water Corporation (SA Water)
  • Department of Water Land & Biodiversity Conservation (DWLBC)
  • TAFE South Australia
  • SA Premiers Science and Research Fund

Project Associates

  • Patawolonga Catchment Water Management Board
  • Torrens Catchment Water Management Board

Project Advisory Role

  • South Australian Department of Health
  • South Australian Environment Protection Agency

Project Co-ordinators

  • Dr. Stephanie Rinck-Pfeiffer (UWI) Project Manager
  • Dr. Peter Dillon (CSIRO) Research Leader

Timeline

2005-2008

Schematic representation of the ASTR process