Environmental issues

Water quality

2010 Audit of the Sydney drinking water catchment

The 2010 audit of the Sydney drinking water catchment is the sixth independent audit report of this catchment. Like the five previous bi-annual reports (prepared by CSIRO in 1999 and 2001, the Department of Environment and Conservation in 2003 and 2005, and the Department of Environment and Climate Change in 2007) this report has been prepared in accordance with section 42 of the Sydney Water Catchment Management Act 1998. Section 42A of the Act requires that the audit, that was previously undertaken every two years, is now undertaken every three years.

The catchment covers an area of 16,000 km2 and supplies drinking water to more than 4 million people in Sydney, the Blue Mountains and the Illawarra (catchment map 10973catchmentmap.pdf, 185KB). The audit report provides a valuable benchmark for the government, private sector and the community, who share common interests in the supply of raw drinking water and the health of the catchment. The report also enables stakeholders to identify areas that need to be targeted for additional action.

The audit process invited submission from stakeholders and interested parties (Chapter 2 10973Ch2.pdf, 325KB). It involved consultations on information and data to assist in assessing the state of the catchment.

The 2010 audit report is structured around four major themes:

Audit results are summarised (10973summary.pdf, 290KB) and a consolidated list of recommendations (10973recomend.pdf, 51KB) included. Sub-catchment summaries are provided in Appendix C (10974AppendixC.pdf, 11MB)

Contents of volumes 1 and 2

(Provided as pdf files - requires Adobe Reader)

Summary (10973summary.pdf, 290KB)

Recommendations (10973recomend.pdf, 51KB)

Chapter 1: Introduction (10973Ch1.pdf, 140KB)

Chapter 2: Audit Methodology (10973Ch2.pdf, 325KB)

Chapter 3: Land Use and Human Settlement (10973Ch3.pdf, 1.53MB)

Chapter 4: Biodiversity and Habitats (10973Ch4.pdf, 2MB)

Chapter 5: Water Availability (10973Ch5.pdf, 1.15MB)

Chapter 6: Water Quality (10973Ch6.pdf, 1.25MB)

Chapter 7: Audit Recommendations (10973Ch7.pdf, 101KB)

Acronyms and References (10973AcronymsRefs.pdf, 76KB)

Appendix A: Roles and responsibilities of stakeholders (10974AppendixA.pdf, 60KB)

Appendix B: List of parties that responded to the audit (10974AppendixB.pdf, 34KB)

Appendix C: Sub-catchment summaries (10974AppendixC.pdf, 11MB)

Appendix D: Major projects in the Catchment (10974AppendixD.pdf, 98KB)

Appendix E: Water sharing plan management zones (10974AppendixE.pdf, 67KB)

Appendix F: Flow exceedance curves (10974AppendixF.pdf, 1.16MB)

Appendix G: River water quality (10974AppendixG.pdf, 385KB)

Page last updated: 26 February 2011