To ensure that an existing onsite sewage system and/ or onsite sewage system holding tank with a design flow of greater than 10,000 Litres per day and regulated under the Ontario Water Resources Act ceases to be a significant drinking water threat, where this activity is a significant drinking water threat, the Ministry of the Environment, Conservation and Parks shall review and, if necessary, amend Environmental Compliance Approvals to incorporate terms and conditions that, when implemented, ensure that these onsite sewage systems are managed to reduce the risk to drinking water sources.

The terms and conditions may include, as appropriate, requirements for the proponent/applicant to undertake mandatory monitoring of groundwater impacts, contingencies in the event that drinking water quality is adversely affected, regular and ongoing compliance monitoring, mandatory system inspections at least every five (5) years, and upgrading of these onsite sewage systems to current standards, if necessary. In addition, the terms and conditions may include annual reporting to the County of any monitoring and inspection programs required and their results.

(NC-CW-1.12): Where the Source Protection Plan policies may result in amendments to an existing Prescribed Instruments or the issuance of a new Prescribed Instrument, the applicable ministry shall provide a summary of any actions taken the previous year to implement the policies and provide a written report summarizing this information to the Source Protection Authority by February 1st of each year.