UK supermarket salad suppliers investigated over pesticides in rivers

Exclusive: Environment Agency takes action against one site and looks into more than 50 others

The UK environment watchdog is examining whether more than 50 sites that supply salad and vegetables to supermarkets and other businesses are discharging chemical pollution into rivers and streams.

The action follows revelations that a salad producer supplying retailers including Waitrose was washing pesticides into a protected chalk stream in Hampshire.