Reports and Plans
On this page:
Reports
We release water quality and water and wastewater monitoring reports each year. You can view the current and previous year reports on the website. Contact the Region of Waterloo Water and Wastewater Services to request older reports. Reports may not meet accessibility guidelines due to requirements to include technical information. Alternate formats are available upon request.
Water quality reports
Water quality and summary report compares the level of quality for the drinking water in Waterloo Region to the Ontario Drinking Water Standards in the legislation O.Reg.169/03.
- 2025 water quality report and 2025 water quality summary
- 2024 water quality report and 2024 water quality summary
Water and wastewater monitoring reports
Water and wastewater monitoring report documents actual water use and wastewater flows, water production and wastewater treatment capacities, development planning and remaining capacity.
Note on the 2025 and 2024 water and wastewater monitoring reports (WWMR): As per Council Report EES-WAS-26-001 dated January 13, 2026 (page 210 of Regional Municipality of Waterloo
Sustainability, Infrastructure, and Development Committee Addendum Agenda), water capacity constraint in the Mannheim Service Area has been identified. All references to the Region’s Integrated Urban System (IUS) in the above WWMRs should not be used. The 2026 WWMR update will include the revised methodology with other parts remaining unchanged.
City and Township water quality reports
Along with the Region of Waterloo, the Cities and Townships are also responsible for releasing water quality reports.
- City of Cambridge water quality reports
- City of Waterloo water quality reports
- Kitchener Utilities water quality reports
- North Dumfries Township - refer to the Region of Waterloo water quality reports on this page
- Wellesley Township - refer to the Region of Waterloo water quality reports on this page
- Wilmot Township
- Woolwich Township
Environmental record search request
Request an environmental record search to obtain information from the Hydrogeology and Source Water Protection Urban Threats Inventory database. Fee applies.
Source Protection reports
Source Water Protection Policies protect municipal wells and surface water intakes from activities that may pose a threat to drinking water
- 2025 Source Protection Summary and 2025 Source Protection Annual Report (coming soon)
Plans
Our plans provide long term direction on water and wastewater operations. Plans may not meet accessibility guidelines due to requirements to include technical information. Alternate formats are available upon request.
Approved plans
- Ayr Wastewater Servicing Master Plan
- Baden-New Hamburg Water and Wastewater Master Plan
- Biosolids Strategy
- St. Jacobs and Elmira Wastewater Treatment Master Plan
- Water Efficiency Master Plan (appendices available on request)
- Water Supply and Distribution Operations Master Plan (appendices available on request)
- Water Supply Master Plan
- Wastewater Treatment Master Plan (2018)
- Appendix A: Tech Memo 1A - Wastewater Treatment Plant Population and Flow Projections
- Appendix B: Tech Memo 1B - Sewage Pumping Station Population and Flow Projections
- Appendix C: Tech Memo 2 - Status of Existing Treatment Facilities and Capacity Assessment
- Appendix D: Tech Memo 3 - Determination of Projects to be Re-evaluated
- Appendix E: Tech Memo 4 - River Monitoring Program Review
- Appendix F: Tech Memo 5 - Evaluation Methodology
- Appendix G: Tech Memo 6 - Identification and Screening of Alternative Liquid Treatment Options
- Appendix H: Tech Memo 7 - Identification and Screening of Alternative Solids Treatment Options
- Appendix I: Tech Memo 8 - Capacity Assessment of Fountain Street Truck Sewer Opportunities
- Appendix J: Tech Memo 9A - Phosphorus Offsetting: Review of Existing Ontario Programs and Opportunities
- Appendix K: Tech Memo 9B - Receiving Water Assessment
- Appendix L: Tech Memo 10 - Development and Evaluation of Short-listed Options
- Appendix M: Tech Memo 11 - Sensitivity Analysis
- Appendix N: Public Consultation - available upon request
Plans in progress
- Baden-New Hamburg Water and Wastewater System Servicing Review
- Final Report - Executive Summary
- Final Report - Main Report (updated September 2023)
- Final Report - Appendices (updated September 2023)
- Biosolids Strategy
- Water Supply Strategy
- Wellesley Water and Wastewater Master Plan
