The Centre for Urban Biodiversity Conservation and Education (CUBE) has submitted a management plan to the city corporation commissioner and other government departments which will be undertaken and implemented in the next one year. These measures will help conserve Singanallur Lake. The report addresses some of the major issues of the lake such as water contamination, hyacinth growth, inorganic farming and the need to improve the biodiversity of the lake. Vinny R Peter, a research scholar and member of CUBE, said as per the public works department records, the lake’s water was used for drinking purposes when it was formed. “But over the years, due to sewage, drainage, industrial effluents and agricultural pollution, the lake was contaminated and could not be consumed. But we want to revive that,” she said. V S Vijayan, former director and founder of Salim Ali Centre for Ornithology and Natural History said there were two inlets that contained heavy metals and one inlet that contained a lot of pesticides. “The water from these inlets should be tested and measures be taken to stop this contamination,” he said. Apart from that, the scientists have called for a study on the lake’s various catchment areas. He added that the lake had a lot of invasive fish species such as African Cat fish which will not allow local fish to survive. “That should be eliminated and we should get a fish expert’s help to introduce some fish varieties into the lake to improve the production of local fish species,” he said. We have understood that fishing takes place on contract basis and one contractor has a monopoly. On water hyacinth, the scientists said nearly Rs33 lakh was being spent every year for the removal of water hyacinth. “It is a total waste of money. In Kerala, we bought a weaving machine for Rs1 lakh to help us create ropes out of water hyacinth,” said B R Narayanaswamy, environmentalist.