Humanius , 4 hours ago

More like they have an ancient sewage system.

Basically, if the sewer system gets overwhelmed, for instance if there is a large amount of rainfall in a short time, then the sewage overflows directly into the Seine.
They have built infrastructure leading up to the Olympics to capture this overflow in storage tanks, but you cannot build infinitely large storage tanks so at some point it will still overflow.

And 2024 has been a very wet year thusfar, so…