New Delhi, Nov 16, 2016 : “Why should you (farmer) be allowed to cultivate vegetables on the land along Yamuna? Do you even know how much polluted the river is? It contains heavy metals and other high pollutants. People buy these vegetables from you and fall sick by eating them. “Delhi Jal Board is not going to clean the river and we are not going to permit anything on the river. We wish you could understand the impact of the produce on the health of people,” a bench headed by NGT Chairperson Justice Swatanter Kumar said.