Cleaning up the Thames is an ongoing process (Credit: BANANA PANCAKE/Alamy Stock Photo) ... For example, pollution from toxic metals in the river has dropped since the early 2000s, according to David Morritt, an expert in aquatic ecology at Royal Holloway, University of London in Egham, Surrey, UK. read more
In the 1860’s they built 1300 miles of sewers and river embankments to divert effluent east of the city. read more
As they swam towards the safety of the shore, the passengers were overcome by the noxious cocktail of pollution in the water. In 1957, the pollution levels became so bad that the River Thames was declared biologically dead. The amount of oxygen in the water fell so low that no life could survive and the mud reeked of rotten eggs. read more