Recently, Delhi chief minister Sheila Dixit claimed that Yamuna would be cleaner up to 70 per cent before the Commonwealth Games in 2010. Ironically, the Delhi government itself submitted an affidavit before the Supreme Court stating that the Yamuna clean drive would not be complete before 2012. In its affidavit, Delhi Jal Board (DJB) said that the river remained a ‘sewage canal’ due to the 143 unauthorised colonies, 1,080 slums and villages that present a problem in collection of sewage water that flows into the Yamuna untreated.