France invests $1.5 billion for the 2024 Olympics in its effort to Clean up The Seine River in Paris for Aquatic Events and to Provide Residents with Areas to safely Swim in.
France invests $1.5 billion for the 2024 Olympics in its effort to Clean up The Seine River in Paris for Aquatic Events and to Provide Residents with Areas to safely Swim in.

Paris 2024: The Seine's Grand Cleanup Journey

Saw this video about the problem, I didn't know sewage was flushed into the river alongside the storm waters
https://m.youtube.com/watch?v=S26CHpcD2zk
Well a good number of the swimmers have built up an immunity since the Rio de Janeiro Olympics. It’s just good training philosophy in the modern age. Let’s see if that gives them an edge, Tom.
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With combined sewers (sewers that handle wastewater and storm water in the same pipes), it's generally not that they're just flushing sewage into the river; it's that they're trying to run all the water -- wastewater and stormwater -- through the water treatment plants but failing when the rainfall is too much. The portion they can't handle overflows into the river.
Combined sewers are pretty common in areas with older infrastructure. Atlanta, for instance, has recently been forced by a court's consent decree to spend something like $4 billion fixing (among other things) overflows from the combined sewer system downtown in order to clean up the Chattahoochee River and South River.
(Incidentally, that's the cost to build gigantic overflow tunnels capable of handling extreme rain events, just like Paris is doing -- properly rebuilding the sewer system downtown to handle wastewater and stormwater separately would have been even more expensive.)