{"id":209697,"date":"2025-10-23T18:38:31","date_gmt":"2025-10-23T22:38:31","guid":{"rendered":"https:\/\/doppleronline.ca\/huntsville\/?p=209697"},"modified":"2025-10-23T18:52:13","modified_gmt":"2025-10-23T22:52:13","slug":"discharges-going-into-muskoka-sewage-lagoons-raise-concerns-district-staff-to-tighten-oversight","status":"publish","type":"post","link":"https:\/\/doppleronline.ca\/huntsville\/discharges-going-into-muskoka-sewage-lagoons-raise-concerns-district-staff-to-tighten-oversight\/","title":{"rendered":"Discharge going into Muskoka sewage lagoons raises concerns, District staff to tighten oversight"},"content":{"rendered":"\n

Recent samples taken from hauled septic discharges have identified extremely high chloride concentrations being discharged into Muskoka sewage lagoons.<\/p>\n\n\n

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District staff raised the issue at a joint Engineering and Public Works and Finance and Corporate Services meeting held on Oct. 22, 2025.<\/p>\n\n\n\n

They said monitoring had revealed extremely high chloride concentrations, in some cases over 200,000 mg\/L, far exceeding levels typically found in hauled residential sewage of about 100mg\/L. <\/p>\n\n\n\n

“At these concentrations, even small volumes of hauled sewage can have a significant impact on the receiving water bodies and downstream,” notes the report from Michael Currie, District Director of Water and Wastewater Services.<\/p>\n\n\n\n

Although the nature of the high levels will be further investigated, Currie noted the samples appear to be “related to de-icing chemicals used in commercial portable toilets and some commercial operations. These chemicals, often based on sodium or magnesium chloride (similar to de-icing chemicals used for winter maintenance), are discharged directly with hauled waste and ultimately into the environment,” he noted in his report, which recommended initiatives that would provide greater scrutiny.<\/p>\n\n\n\n

Currently, septic haulers report hauled sewage volumes and contents at the time of disposal with limited verification. “This reliance on the \u201chonour-system\u201d has been identified in MECP [Ministry of the Environment, Conservation and Parks] and staff reviews as a vulnerability, as inaccuracies are suspected,” noted Currie. “Compounding this issue, security at lagoon sites is currently limited to basic lock-and-key access. This approach allows haulers virtually unlimited and unmonitored entry, with no reliable means of confirming who has accessed a site, when loads were delivered, or whether the reported volumes are accurate.” <\/p>\n\n\n\n

The report recommended that hauler agreements be reviewed and standardized, as well as the introduction of secure receiving equipment, “allowing volumes, contents, and hauler identity to be
verified and automatically logged, with non-compliant loads subject to penalties following an education first approach.”<\/p>\n\n\n\n

According to Currie, the new receiving units will enable the District to:<\/p>\n\n\n\n