Heading into the Civic Holiday weekend, no area beaches are posted as unsafe for swimming.
Lambton Public Health says Lake Huron beaches it tests for water quality have all been given the all clear.
The health unit conducts regular testing at Grand Bend, Pinery, Ipperwash, C.J. McEwan, Bright's Grove and Canatara Park beaches.
Reports are available online at www.lambtonpublichealth.ca or by texting the word Beach to 226-909-3003.
Water sampling is not conducted along the St. Clair River.