Cause of Ouseburn foam 'isolated' as officials confirm criminal investigation into pollution problem Pipes are now being cleaned to remove the pollutant which has caused the river to turn frothy over recent weeks, with people still urged not to enter the water 12:00, 16 MAY 2021 The video will auto-play soon8Cancel Play now Get the latest North East news and updates delivered straight to your inbox Invalid EmailSomething went wrong, please try again later. Subscribe When you subscribe we will use the information you provide to send you these newsletters. Your information will be used in accordance with ourPrivacy Notice. Thank you for subscribingWe have more newslettersShow meSee ourprivacy notice