Where the conveyance of a liquid hydrocarbon by way of a pipeline within the meaning of the Ontario Regulation 210/01 under the Technical Standards and Safety Act, or that is subject to the National Energy Board Act is or could be a significant threat. Spill Prevention/Emergency Response Plan Pipeline owners/operators are encouraged to include the following drinking water source protection information in their spills response plan:

 Mapping of vulnerable areas
 Locations of municipal intakes
 Actions to protect drinking water sources should an incident occur
 Procedures for responding to a rupture
 Notifying local water treatment plant operators in the event of a rupture
 Include design, monitoring and maintenance practices that would prevent the pipeline from becoming a significant threat

Monitoring policy M21 applies.

M21: By February 1, the owner of a pipeline that has been identified as a significant threat shall report to the Source Protection Authority on actions taken to implement this policy in the previous calendar year.