Toad Lake, located five miles northeast of Bellingham, has been identified as having unsafe levels of microcystins in algae mats, according to a health alert from Whatcom County Health and Community Services. The toxins, which can cause liver damage and gastrointestinal issues, were detected in floating algae on the lake's surface.
The health department advises avoiding contact with algae, rinsing pets immediately if exposed, and keeping children away from algae blooms. The warning comes after testing confirmed microcystin levels above U. S. Environmental Protection Agency and Washington State Department of Health guidelines.