For new storage of snow that is:

below grade; or
at or above grade, where the storage area exceeds 1 hectare

and, where this activity would be a significant drinking water threat, it shall be designated for the purpose of Section 57 of the Clean Water Act and shall be prohibited so that the activity never becomes a significant drinking water threat.

OC-5.03: The Risk Management Official shall provide a report to the Source
Protection Authority, by February 1st of each year, summarizing the actions
taken by the Risk Management Official to implement the Source Protection
Plan policies, in accordance with the Clean Water Act and associated
regulations.