1,500 Delhi slums major cause of Yamuna pollution: Panel
According to the monitoring committee overseeing the cleaning of Yamuna, absence of sewer networks in over 1,500 unauthorised colonies and slums in Delhi is one of the major reasons of pollution in the river. There's no regulated system of emptying their septic tanks and faecal sludge, the report said. The National Green Tribunal had in July formed the monitoring committee. 