types of toxic chemicals in rivers
Tanneries are responsible for the most harmful type of toxins and when concentrated in clusters in a small area like Unnao, where more than 790 times the accepted standard of chromium is dumped into the river (nearly 1,125 tons) entire farms burn up. More details about the issues with chromium in point 7.
Water pollution. Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.