News Flash

City of Chestermere News

Posted on: August 19, 2020

Swimming Advisory Lifted for Chestermere Lake

advisory lifted

August 21, 2020

Effective immediately, the water advisory and swimming prohibition has been lifted for all of Chestermere Lake. The advisory for lake activities, deep-water swimming and Anniversary Park beach was lifted on Wednesday. The advisory has been completely removed today and Cove Beach and Sunset Park have fully reopened.  

“Repeated tests results have shown an improvement in the water quality at these beaches,” says Chief Administrative Officer Bernie Morton. “After consultation with Alberta Health Services, we can safely open these beaches and park areas for the enjoyment of the public.”

As Alberta Health Services (AHS) was not conducting water quality testing this summer due to the COVID-19 pandemic, the City of Chestermere initiated a weekly water monitoring program to measure fecal indicator bacteria (Enterococcus) levels according to the Alberta Safe Beach Protocol. Last week, a few samples exceeded the provincial Enterococcus water quality guideline for recreation swimming, resulting in the advisory.

Since then, additional testing above the weekly sampling was completed and results showed an improvement in water quality, with all levels well below AHS guidelines. Water testing will continue throughout the summer and in-depth analysis is being completed to determine what caused the temporary increase and fluctuation in enterococcus indicators.

The City thanks residents and visitors to the lake for their understanding and patience as these precautions were taken in the interest of public safety.


Post from August 19, 2020

Following a series of new water testing and after consultation with Alberta Health Services, effective immediately, the swimming advisory for Lake Chestermere has been lifted for Anniversary Park Beach, deep-water swimming, and all lake activities.  However, as a precaution, the ‘no swimming’ advisory remains in place for Sunset Park and Cove Beach until latest test results and analysis are complete for these locations which is expected for the end of the week.

The City of Chestermere initiated a weekly water monitoring program at Chestermere Lake this summer to measure fecal indicator bacteria (Enterococcus) levels according to the Alberta Safe Beach Protocol. Last week, a few samples exceeded the provincial Enterococcus water quality guideline for recreation swimming, resulting in the advisory.

Since then, additional testing above the weekly sampling was completed using E.coli as the fecal indicator bacteria. The results of the E.coli testing are available sooner compared to the Enterococcus tests and can help with more timely decisions. Recent results from the past three sample events show that E.coli levels have decreased and now meet provincial water quality guidelines for recreation. The additional testing for Sunset Park and Cove Beach will determine water quality safety and sources of the bacteria. The results of this new testing should be available by the end of this week.

Chestermere Lake is a living environment. Fecal indicator bacteria may originate from a variety of sources that include wildlife, dogs, domestic livestock, natural sources (lake sediment and aquatic vegetation), and human sources. Levels of bacteria can be different depending on the location in the lake (e.g., east or west shore, the middle of the lake, or at the shoreline). Test results from the middle of Chestermere Lake, collected monthly May through August, indicate low fecal indicator bacteria levels that meet provincial recreation and irrigation water quality guidelines.

The City thanks residents and visitors to the lake for their understanding and patience as these precautions were taken in the interest of public safety.

Updated results for Cove Beach and Sunset Park are expected on Friday, August 21.

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