The culprit of this do-not-drink advisory is cyanotoxins, which are produced by photosynthetic, aquatic cyanobacteria. Despite being commonly referred to as blue-green algae, cyanobacteria are not technically algae. According to the US Environmental Protection Agency, cyanobacteria are often mistaken for green algae since both produce thick mats.
To learn more about the drinking water advisory, visit https://www.oregon.gov/oha/ph/
By Erica Johnson