Delhi CM Arvind Kejriwal on Monday inspected India's largest sewage treatment plant (STP) at Coronation Pillar and said his government aims to treat all wastewater before it's discharged into Yamuna. Work on the state-of-the-art STP at Coronation Pillar was sanctioned in 2018 and it's currently undergoing a trial run. It'll benefit areas like Sant Nagar, Kamla Nagar, Bhalswa and Wazirabad.