According to the officials from KSPCB, the main reason lakes fall under the Class E category is the discharge of raw sewage. While the government is augmenting the underground sewage network and Sewage Treatment Plants (STPs) are being set up, bringing down pollution of Bengaluru’s lakes is a complex issue. Moreover, measures to control water pollution have to be taken either by the Bruhat Bengaluru Mahanagara Palike (BBMP) or BWSSB.