Ada County — Central District Health (CDH), in conjunction with the Idaho Department of Environmental Quality (DEQ), have lifted a public health advisory for Cascade Reservoir, located in the Valley County community. The advisory was issued on August 13, 2021 due to the presence of cyanobacteria, also known as a Harmful Algal Bloom (HAB). After regular monitoring, and water sample collection and testing, DEQ confirmed levels have returned to normal and toxin levels are below the safety threshold.