Area beaches were cleared for swimming heading into the first "official" weekend of summer.
Lambton Public Health (LPH) started monitoring the water quality at seven public beaches along the shore of Lake Huron on June 1.
The beaches will be posted with warning signs when E. coli levels are estimated to exceed the Ministry of Health guidelines.
Grand Bend's north and south beaches, Ipperwash Main Beach, Bright's Grove (including Mike Weir Park), and Canatara Park beaches received an all clear on Friday, June 26 using predictive models.
Pinery Provincial Park and Highland Glen Park are monitored weekly through water sampling with lab analysis.
While no sampling occurs along the St. Clair River, caution signs advising high bacterial levels following heavy rainfall are permanently posted at Branton Cundick Park, Brander Park, and Seager Park.
