Scientists have a greater understanding of the amount of microplastics polluting Flathead Lake, the likely sources of these microplastics and what can be done to prevent more from finding their way into the lake’s world-renowned pristine water.Scientists have a greater understanding of the amount of microplastics polluting Flathead Lake, the likely sources of these microplastics and what can be done to prevent more from finding their way into the lake’s world-renowned pristine water.