I live in Minnesota with the other bio-monitering system! The city of Minneapolis is the only city in the USA that monitors the water with mussels (not clams), it's been going for like 15 years. We get our water from the Mississippi and contamination is always a concern. I remember learning about it in school. I had no idea it was a unique concept before watching the video,(reply>), @Jebediah Schlattus why was it horrific to watch?,(reply>), @STP_13 ah, edited my mistake xd,(reply>), @Jebediah Schlattus “horric” - ?     Unclear what you’re trying to say.,(reply>), We learn about biomonitoring in school (in Germany). Knowing that biomonitoring is a thing,.the beginning of the video is horrific to watch. (Not only clams and mussels can be used for biomonitoring btw!),(reply>), I'm attending the U, and I had no idea this was one of the ways my water is monitored. Now I have something to talk about during parties... if I ever decide to go to one.