The Ottawa District Office of the Ministry of the Environment, Conservation and Parks (MECP) received a report regarding a possible blue-green algal bloom that was observed at 1:10 PM on September 1st, 2025, on the Mississippi Lake, within the area of 207 McCulloughs Landing, Perth.
Based on conversation with the South East Health Unit, a site visit will not be conducted. This is generally an area with private access to the water and no surface water intakes. This email is being sent as notification only.
For general information on blue-green algae, please refer to the MECP’s website at Blue-green algae | ontario.ca.
Please see attached documents for Blue-Green Algae Fact Sheet.