Indore : National Green Tribunal ( NGT) has instructed Indore Municipal Corporation to remove garbage and debris from the riverbed of Khan before November 15 and submit a report with photographs of before and after removal of debris. The direction comes a petition filed by social activist Kishor Kodwani alleging that Khan and Saraswati rivers of the city have virtually turned into drains as the laws pertaining to establishment of sewerage treatment plants and prevention of untreated sewage from discharging into rivers are not implemented in the true spirit. Kodwani said that the NGT directed IMC to first take picture of entire Khan river, also showing the petitioner, and then remove all the debris and garbage from riverbed. Once the garbage and debris is removed, the picture should again be taken to prove that the work is accomplished, he added. The IMC in its reply mentioned that there are around 163 sewerage points on Khan rivers and to stop flow of sewerage into the river they have issued tender and are on process to set up treatment plants to treat sewerage waters to keep river clean.