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The original was posted on /r/interestingasfuck by /u/Greedy-Year8384 on 2025-07-06 11:49:41+00:00.

Original Title: After a $1.6 billion investment and years of hard work, the Seine River, which was once heavily polluted, is now clean enough for swimming for the first time in over a century. The city has also invested in three public swimming locations.