A Water Quality Quarterly Report was issued every quarter by Toronto Water (formerly the Water & Wastewater Services Division) from July 2000 to September 2003. The report was required by the Province of Ontario's Drinking Water Protection Regulation but has been replaced by the Drinking Water Systems Annual Report.

The reports below describe the city's drinking water operations and provided detailed information from the city's Water Quality Laboratory on the quality of Toronto's drinking water during the period identified.

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2003

• July - September, 2003
• April - June, 2003
• January - March, 2003

2002

• October - December, 2002
• July - September, 2002
• April - June, 2002
• January - March 2002 | Table

2001

• October - December 2001 | Table
• July - September, 2001 | Table
• April - June, 2001 | Table
• January - March, 2001 | Table

• October - December, 2000 | Table A | Table B | Table C
• July - September, 2000 | Table A | Table B | Table C