CHIPPEWA LAKE — Toxin levels remain high in the latest water test at Chippewa Lake.
The test revealed algal bloom toxins at 8.18 parts per billion this week.
Per Ohio Department of Health guidelines, a public health warning is issued when toxin levels reach 6 parts per billion. The warning recommends children, pregnant or nursing women, individuals with certain medical conditions and pets should avoid contact with the water.
When toxin levels reach 20 parts ppb, the lake must be closed to the public.
The toxins are a result of algal blooms that occur in bodies of water due to a combination of factors including water temperature, rainfall and nutrient runoff within the watershed.
The Chippewa Lake algal bloom is the result of a microscopic organism called cyanobacteria. Its blooms can produce harmful toxins that may make people and pets sick when they come in contact with the water.
The previous tests were 5.10 ppb for June 21-26; 7.64 ppb for June 15-19; and 11.06 ppb for June 8-15, when the original warning was posted.
Medina County Park District will continue to monitor water conditions as needed. Public health warnings and lake closures remain in effect until two consecutive tests taken at least one week apart show levels have dropped below Ohio Department of Health thresholds.
Samples collected by the park district’s natural resource staff are sent to Northeast Ohio Regional Sewer District for testing. Results typically are reported back to the park district in three to five working days.
Notices have been posted at the beaches in the villages of Gloria Glens and Chippewa Lake and at the public boat launch ramp.
The park district notified the mayor’s office in each village of the advisory, as well as the Medina County Health Department.