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Middlesex-London Health Unit

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Beach Water Monitoring

The Middlesex-London Health Unit works with owners and operators of local beaches to make sure they are safe for the public. Some beaches are checked every week between the months of June and September for bacteria levels and physical or chemical dangers. Other beaches are permanently posted advising persons that the beach is not monitored.

For beaches that are sampled, a minimum of five water samples are taken and brought to the Public Health Lab for testing. To learn more about how water samples are collected or for more information about beach water monitoring, please read the Ministry of Health and Long-Term Care’s Operational Approaches for Recreational Water Guideline, 2018 (PDF 596KB).1

Latest beach samples in Middlesex-London

Note: Beach sampling has ended for this season and will restart in June 2024.

Name of Beach


Type of Sample


Lake Whittaker Conservation Area - Lakeshore Campground
5840 Whittaker Ln., Harrietsville, ON, N0L 1B0



Lake Whittaker Conservation Area - Day Use Area
5840 Whittaker Ln., Harrietsville, ON, N0L 1B0

  • Acceptable

    No harmful levels of bacteria were found at the time the last water sample was collected. Keep in mind that weather and other factors may have changed the water quality since the last sample. 
  • Closed

    High levels of bacteria or other dangers exist and a serious health and safety risk has been identified. Signs (e.g. a warning sign) and/or barriers are put in place to close the beach.

See Beach Water Quality to learn more about what affects water quality, when notice and warning signs are posted, or when beaches are closed.

Information for other public beaches in the surrounding areas

  • Lambton: Lake Huron, including Grand Bend, Ipperwash and Pinery Provincial Park
  • Huron - Perth: Lake Huron, north of Grand Bend to just north of Goderich, Wildwood Lake and St Mary’s Quarry
  • Grey Bruce: Lake Huron, north of Kincardine to Tobermory, and Georgian Bay
  • Oxford - Elgin: Lake Erie, including Port Stanley and Port Burwell, Aylmer, Woodstock, Innerkip, Lakeside and Mount Elgin
  • Chatham-Kent: Lake Erie and Lake St. Clair
  • Windsor-Essex: Lake Erie, including Point Peele, and Lake St. Clair

Additional Information

To speak to a Public Health Inspector on the Environmental Health Team about public beaches or beach water monitoring, please call:

  • 519-663-5317
Date of creation: December 11, 2012
Last modified on: September 19, 2023


1Ontario. Ministry of Health and Long-Term Care. (2018, February 5). Operational approaches for recreational water guideline, 2018 . Retrieved from