The causes of the condition of our fresh waters are easy to identify on a theoretical level. More complex, however, is to discover and remediate the cause of a pollution source on the ground. Waters are severely threatened by spills from chemical industries such as PFAS, which poison water with alien, indestructible and eternal molecules that enter the bodies of humans and animals, killing them in horrible ways. The intensive use of pesticides and fertilisers is another cause of this chilling story. The absolute (but not the only) Pratoganista is Glyphosate. This chemical compound with devastating effects was intended to kill the weeds that were robbing farmers and their masters, the food sellers, of their sleep. Instead, like a modern Attila reincarnated in a chemical compound, it kills everything that comes into contact with its atoms, sparing no one: from flowers to bees, from birds to bison, from the elderly to children. Then we have solid waste, mainly plastic, which uses rivers as great highways to the seas and oceans, a phenomenon known as Runoff. Finally, overpopulation is another aspect that has a major impact, a controversial and little-addressed aspect because it contains within it a concept that each of us rejects, namely being too much. Nobody would like to be in too much, but in reality we are. The planet cannot feed and at the same time satisfy all the needs of 8 billion people.