Warning over 'dirty secret' of toxic chemicals on farmers fields

Jonah FisherEnvironment correspondentGetty ImagesAbout 3.5 million tonnes of sewage sludge, that's enough to fill nearly 900 Olympic sized swimming pools are spread of farmers fields in England and Wales each year. Successive governments have failed to deal with the threat posed by spreading sewage sludge containing toxic chemicals on farmers' fields, a former chair of the Environment Agency has told the…