The Oxford-Cambridge boat race in London is under a health warning due to high levels of E. coli in the Thames.

E. coli presence indicates potential health risks for participants, leading to safety precautions by race organizers.

Raw sewage discharge into the Thames has more than doubled from the previous year, totaling over 3.6 million hours.

Organizers are implementing measures such as covering wounds and promoting hand hygiene to safeguard rowers.

There is a public outcry to hold polluters accountable and improve water quality, with an election looming.

The issue highlights the broader significance of river health for users, particularly for sports events like the Boat Races.