To ensure the future establishment of a system that collects, stores, transmits, treats or disposes of stormwater, never becomes a significant drinking water threat, where such an activity would be a significant drinking water threat, the Township and County of Dufferin, where applicable, shall amend their planning documents to ensure the design of new stormwater management facilities reduces the risk of contaminating drinking water, and directs the discharge of stormwater outside of vulnerable areas.

DC-M-CW-1.9: Where the Township and County of Dufferin is required to amend their Official Plan and/or Zoning By-law and provide proof of compliance to the Source
Protection Authority, they shall do so within 30 days of final approval of the amendment(s) or, where the matter has been appealed to the Ontario Municipal
Board, the date of their decision to approve.