Updated Apr 16, 2021 | 06:19 IST The Aam Aadmi Party (AAP) government has filed its rejoinder affidavit in the apex court in response to the reply of Haryana and its Department of Irrigation and Water Resources. Haryana hasn't taken steps to lower ammonia level in Yamuna, Delhi govt tells SC [Representative image]  |  Photo Credit: ANI New Delhi: The Delhi government has told the Supreme Court that Haryana has not taken "any concrete" step to address its grievance over discharge of "untreated pollutants" causing rise in ammonia level in the Yamuna and release of insufficient water which led to reduction in supply in some areas here.