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Public Beaches

Understanding beach water quality

Water quality can change from day to day or even hour to hour depending on the weather and other conditions. We encourage beach goers to make an informed decision about beach water quality before swimming.

We regularly sample designated public beaches for bacteria. However, due to the delay in receiving lab results, beach goers cannot rely on only lab results to know if it is safe to swim. The information below will help you predict the quality of beach water during your visit.

Rain is the biggest factor to impact beach water quality. Rain washes contaminants into streams, rivers and lakes. While small amounts of rainfall are unlikely to have much impact, we advise you to avoid swimming for 24-48 hours after heavy rains.

Wind can quickly build up significant waves. Wave action on any body of water can stir up sand and silt, making the water cloudy. If you can't see your feet standing waist deep in water, bacteria levels may be higher.
In some smaller bodies of water, or more confined areas of large lakes, the feces of waterfowl can have a significant impact on water quality.
Shallow bodies of water are likely to be warmer than deeper ones during the summer. Warm temperatures are more faviourable for bacterial survival and growth. Bacteria levels tend to be higher in wet sand as well. Be sure to use a hand sanitizer or wash hands after playing at the water's edge.

Never swallow beach water no matter how clear the water looks!

This page has been adapted with permission from Huron County Health Unit.

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If you have any questions or concerns that require a response, please contact Health Connection directly.

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