| Assessment Reports |
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The Assessment Reports for each SPA will be composed of five technical elements. These technical elements include:
Learn More about Assessment Reports
Latest Assessment Report NewsThe Assessment Report for the Credit Valley Source Protection Area is being further updated with new Wellhead Protection Areas around wells in Acton and Georgetown in Halton RegionThe CTC Source Protection Committee is proposing updates to the Well Head Protection Areas around municipal wells in the Acton and Georgetown areas in the Region of Halton. Some of these areas extend into the Town of Erin in Wellington County. This affects where the CTC Source Protection Plan policies will apply in the Credit Valley Source Protection Area. New technical studies have been completed as part of Tier 3 water budget work that has improved our knowledge about the source of the water for municipal wells serving Acton and Georgetown. The updated maps showing the new vulnerable areas can be viewed here. Persons who are directly impacted by being included in the new vulnerable areas are being sent individual letters with maps and notice of the opportunity to comment. Further information will be provided to persons who are no longer in a vulnerable area later this fall. If you want to know if your property is in a vulnerable are you can view the maps here or you can search by address on our interactive map. After considering any comments received by October 8, 2012, the CTC SPC will submit in late October, 2012, an update to the Assessment Report for the Credit Valley Source Protection Area to the Ministry of the Environment for approval. The update will include the new maps and other associated changes required to the identification of threats. The maps which are included in the Proposed Source Protection Plan are based on the new information. The Updated/Amended Assessment Reports for the CTC Source Protection Region have been approved by the Ministry of EnvironmentThe following Updated and Amended Assessment Reports for CTC Source Protection Region have been approved by the Ministry of Environment January, 2012.
Preface, Executive Summary and Glossary (1.9 MB) Chapter 1 Introduction (1.2 MB) Chapter 2 Watershed Characterization (2.5 MB) Chapter 3 Water Budget and Stress Assessment (6.3 MB) Chapter 4 Assessing Vulnerability of Drinking Water Sources (7.8 MB) Chapter 5 Drinking Water Threats Assessment (10.5 MB) Chapter 6 Summary, Conclusions and Next Steps (0.2 MB) Chapter 7 References (0.1 MB) Appendices - A1, B1, C1, C2, C3, C4, D1, D2, D3, E1-6, E7, E8, E9, E10, F (Part 1, Part 2, Part 3, Part 4)
Preface, Executive Summary and Glossary (1.1 MB) Chapter 1 Introduction (1 MB) Chapter 2 Watershed Characterization (4.1 MB) Chapter 3 Water Budget and Stress Assessment (5.2 MB) Chapter 4 Assessing Vulnerability of Drinking Water Sources (4 MB) Chapter 5 Drinking Water Threats Assessment (6 MB) Chapter 6 Summary, Conclusions and Next Steps (100 KB) Chapter 7 References (100 KB) Appendices - A1, A2 (part 1, part 2, part 3, part 4a, part 4b, part 5a, part 5b, part 6a, part 6b), B1, C1, C2, C3b, D1, D4, E2, E3, E4, E5, E6
Preface, Executive Summary and Glossary (1.7 MB) Chapter 1 Introduction (700 KB) Chapter 2 Watershed Characterization (3.3 MB) Chapter 3 Water Budget and Stress Assessment (5.8 MB) Chapter 4 Assessing Vulnerability of Drinking Water Sources (1.5 MB) Chapter 5 Drinking Water Threats Assessment (4.1MB) Chapter 6 Summary, Conclusions and Next Steps (150 KB) Chapter 7 References (120 KB) Note: Some of these files may take a long time to download, especially with dial-up internet. We would be happy to send you an electronic copy on CD. Send your request to
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The Updated/Amended Assessment Reports for the CTC Source Protection Region have been submitted to the Ministry of the Environment for their approval.These Updated Reports contain new information about potential threats to Lake Ontario Drinking Water Sources as well as new vulnerable areas in the Halton Hills and Orangeville areas. Updated Assessment Report: Credt Valley Source Protection AreaPart 1 (Chapters 1-3) Appendix: Updated Assessment Report: Credit Valley Source Protection Area Updated Assessment Report: Toronto and Region Source Protection Area Updated Assessment Report: Toronto and Region Source Protection Area Appendix: Updated Assessment Report: Toronto and Region Source Proteciton Area Updated Assessment Report: Central Lake Ontario Source Protection Area Amended Proposed Assessment Report: Central Lake Ontario Source Protection Area Appendix: Updated Assessment Report: Central Lake Ontario Source Protection Area The Draft Updated Proposed Assessment Reports for the CTC Source Protection Region are now available online and by request for review and comment. The comment period runs from June 17, 2011 to July 18, 2011These Updated Reports contain new information about potential threats to Lake Ontario Drinking Water Sources as well as new vulnerable areas in the Halton Hills and Orangeville areas. Draft Updated Proposed Assessment Report: Credt Valley Source Protection Area Draft Updated Proposed Assessment Report: Toronto and Region Source Protection Area Draft Updated Proposed Assessment Report: Central Lake Ontario Source Protection Area The Source Protection Committee will consider any comments you make. Comments should be sent to Susan Self, Chair, CTC Source Protection Committee by July 18, 2011 at 5 Shoreham Drive, Downsview ON M3N 1S4, by fax at 416-667-6278 or by email to This e-mail address is being protected from spambots. You need JavaScript enabled to view it . Requests for electronic copies can be made to This e-mail address is being protected from spambots. You need JavaScript enabled to view it . Credit Valley Source Protection Area Assessment ReportThe Credit Valley Source Protection Authority (CVSPA) is pleased to anounce that on Tuesday, December 21, 2010, the Proposed Assessment Report: CVSPA was submitted to the Ministry of the Environment for approval. The Proposed Assessment Report: CVSPA will be updated with Intake Protection Zone 3 (IPZ3) work, tier 3 water budget analysis and other updates in the summer of 2011. The Proposed Assessment Report identifies the location and nature of possible risks to sources of municipal drinking water and non-municipal systems in the Credit Valley Source Protection Area. These risks include activities that are adversely impacting, or could impact, drinking water quality or quantity. The CTC Source Protection Committee is continuing to work to identify possible threats to Lake Ontario drinking water sources and these findings will be presented in an updated Assessment Report anticipated to be released mid-2011.
Toronto and Region Source Protection Area Assessment ReportThe Toronto and Region Source Protection Authority (TRSPA) is pleased to anounce that on Tuesday, December 21, 2010, the Proposed Assessment Report: TRSPA was submitted to the Ministry of the Environment for approval. The Proposed Assessment Report: TRSPA will be updated with Intake Protection Zone 3 (IPZ3) work, tier 3 water budget analysis and other updates in the summer of 2011. The Proposed Assessment Report identifies the location and nature of possible risks to sources of municipal drinking water and non-municipal systems in the Toronto and Region Source Protection Area. These risks include activities that are adversely impacting, or could impact, drinking water quality or quantity. The CTC Source Protection Committee is continuing to work to identify possible threats to Lake Ontario drinking water sources and these findings will be presented in an updated Assessment Report anticipated to be released mid-2011. Central Lake Ontario Source Protection Area Assessment Report
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