Technical Rules

The Clean Water Act, 2006 (“the Act” or “CWA”) ensures communities protect their drinking water supplies through prevention by developing collaborative, watershed-based source protection plans that are locally driven and based on science. For additional information on the CWA and how the source protection plans are developed, readers may refer to this web page: www.Ontario.ca/page/source-protection.

The Act and the General Regulation 287/07 (O. Reg. 287/07) establish a legal framework for drinking water source protection in Ontario. The Director’s Technical Rules (Rules) (entitled “Technical Rules: Assessment Reports”) are established under Section 107 of the Act and govern the assessment of risks to drinking water sources. The version of the 2021 Rules discussed includes the recent amendments to the Rules.

Click here to view the 2021 Technical Rules under the Clean Water Act.