Ambrel Lake water quality test
The City of Wrenford monitors Ambrel Lake regularly during the swimming season to ensure the safety of residents and visitors. These monthly tests measure bacterial levels to determine if the water is safe for recreational contact. The results for the 2020 season are published below for your review.
2020 Monitoring Results
All samples were collected in accordance with the Ontario Ministry of the Environment, Conservation and Parks guidelines. The following table outlines the Escherichia coli (E. coli) concentrations found during each monthly visit.
| Date | Sample Location | E. coli (CFU/100mL) | Status |
|---|---|---|---|
| June 15, 2020 | Main Beach | 45 | Good |
| July 13, 2020 | Main Beach | 62 | Good |
| August 10, 2020 | Main Beach | 110 | Marginal |
| September 7, 2020 | Main Beach | 38 | Good |
What the Results Mean
Water quality is classified based on E. coli levels. A "Good" rating indicates low risk. A "Marginal" rating suggests moderate risk, and a "Poor" rating requires immediate advisories. In August 2020, elevated levels were recorded due to recent heavy rainfall, which can wash runoff into the lake. No boil water advisory information was required for the lake, as it is not a drinking water source.
Protecting Our Waters
Residents play a key role in maintaining water quality. Please ensure you are following all stormwater management and drainage guidelines. Avoid dumping oils, chemicals, or excess fertilizers into storm drains or onto the ground near the lake. These substances can flow directly into Ambrel Lake and harm aquatic life.
If you notice unusual discolouration, odours, or debris in the water, please report a water leak or environmental concern to our service line at Wrenford 311. For more information on how we manage wastewater, see managing wastewater for businesses.
Questions about these results can be directed to the Water & Wastewater department at 519-555-0100 or via email at [email protected].