The Michigan Department of Natural Resources (DNR) has announced the temporary closure of Belle Isle Park’s swimming areas following the detection of high levels of bacteria in the Detroit River. Samples taken on July 10 revealed elevated amounts of E. coli, a bacteria harmful if ingested or exposed through skin contact. The tests found an average of 920 E. coli per 100 milliliters, more than triple the allowed level.
Orange barrels have been placed at the water’s edge, and signs inform visitors of the closure. The beach parking lot is also closed, and staff are notifying visitors as they enter the park and anyone attempting to swim. E. coli outbreaks are often linked to rain events that flush bacteria into the stormwater system and the river. The beach will remain closed until the average sample returns to 300 per 100 milliliters. A new round of samples was taken on Monday, and results are expected within two days.
E. coli is a type of bacteria that can pose significant health risks to humans. When present in high levels in water, it can cause severe gastrointestinal illnesses, including diarrhea, vomiting, and stomach cramps, according to the Centers for Disease Control and Prevention (CDC). Ingesting or coming into contact with contaminated water can lead to infections that are particularly dangerous for young children, the elderly, and individuals with weakened immune systems. Beyond gastrointestinal issues, certain strains of E. coli can lead to more severe conditions such as urinary tract infections, respiratory illnesses, and even kidney failure. This underscores the importance of monitoring and regulating water quality to protect public health.
An emergency alert was issued on Monday morning. Community members can sign up to receive alerts from the text update system.
Belle Isle’s beach has faced similar closures in recent years, with shutdowns in 2023, twice in 2021, and twice in 2017 due to high bacteria levels. The community must stay informed and heed these warnings to ensure public health and safety.
