The Waste to Wealth Mission of the Office of the Principal Scientific Adviser and the Municipal Corporation of Faridabad (MCF) launched a pilot technology on Friday to clean the Gaunchi drain at Faridabad’s Sanjay Colony, a statement said. The Gaunchi drain is a key arterial drainage system in Faridabad. It is amongst the 11 most-polluted drains of Haryana that together release 1,002 million litres of polluted water in the Yamuna every day.