At the Paris Olympics, whether the water quality in the Seine River is safe enough to host some swimming events has been a major question. Bacteria levels in the river fluctuate constantly, and daily ...

A test run meant to allow Olympic athletes to familiarize themselves with the marathon swimming course in the Seine River was canceled Tuesday over concerns about water quality in the Paris waterway.

Pollution in Paris’ Seine River forced the cancellation of two pre-Olympics test events over the weekend, once again raising questions about whether the body of water will be clean enough to host ...