Jolly - this may have spread to Finland as well.
https://yle.fi/uutiset/osasto/news/f...nland/10961805 (In English)
Teuva is my grandfather's home town. I am probably related to half of the town in one way or another. i can guarantee this will remain news and I will have The Husband also check Finnish language stories for more. That area does have a river but not very many lakes. While there may be algae in some of the slower moving rivers, it isn't likely. We do have problems with algae in some areas, but not that one.