Is The River Thames the cleanest in the world?

The Thames is considered to be the cleanest river in the world that flows through a major city. The Thames is home to 125 species of fish and more than 400 invertebrates. This is in spite of the fact that raw sewage is routinely pumped into the river during heavy rains.



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With considerable effort from policymakers, the river's fate began to change. From 1976, all sewage entering the Thames was treated, and legislation between 1961 and 1995 helped to raise water quality standards.

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As the Thames is tidal, its waters are 'brackish' – a mixture of fresh and saltwater. Drinking untreated Thames river water is unsafe, although historically it has been used for many domestic and industrial purposes including cooking, brewing and generating power.

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The Mississippi River This once pristine waterway is perhaps the most polluted in the United States. Part of the problem stems from agriculture. The Mississippi River traverses much of America's heartland, drawing no end of runoff from factory farms. Animal waste isn't the only problem.

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The river Thames in London was so starved of oxygen in August 2022, due to sewage and hot weather, that it was effectively on life support, New Scientist can reveal. A specialised boat was used to directly inject the gas into the water for 11 days that month to prevent plants and fish dying.

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Fish in the Thames There is an incredible 125 species of fish that have been found living amongst the animals in the Thames, and this includes species of conservation and commercial importance.

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It might surprise you to know that the River Thames is considered one of the world's cleanest rivers running through a city. What's even more surprising is that it reached that status just 60 years after being declared “biologically dead” by scientists at London's Natural History Museum.

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According to The Guardian, the Citarum River in Indonesia is so polluted that before you see it, you will smell it.

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The overall bill increase is mainly due to inflation, including rising energy prices. Part of the bill increase also depends on our company performance. In 2021/22 we achieved most of our water supply targets, such as those relating to leaks and supply interruptions.

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