00:00Germans used to call this river the sewage bowl. Now it's one of the cleanest in the country.
00:05The MSHA runs through Germany's old industrial heartland. For decades it absorbed toxic wastewater
00:10and raw sewage. One of the game changers? Diverting this dirty stuff into a treatment plant.
00:15That's been working really well. But in 2025, a new purification stage was unlocked.
00:20Activated carbon. It can remove things that regular plants can't, like pharmaceutical
00:24residues or pesticides. So how does it work? This stuff is basically a super porous form of
00:30carbon that acts like a trap for tiny chemicals. So when it's mixed into wastewater, micropollutants
00:35get stuck to it. The activated carbon with the pollutants attached is then filtered out.
00:39Ever since the MSHA became wastewater free in 2021, it's been teeming with life. What was once a
00:45sewage bowl is now attracting trout, crayfish and hundreds of other species that used to live here.
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