Therefore, heavy metal and other toxic chemicals, such as cadmium and mercury, solvents and pesticide enter the water treatment and cause threat to all things. Many of these substances come from industries and business that dispose of chemical in their wastewater as a part of the regular water that’s being tested. The chemical usually come from hazardous household items such as cleaning products, paints and pesticides. Some include lead and copper in the wastewater cording the pipes and causing serious toxins to spread. Thus, the wastewater treatment can only clean small amounts. The main problem caused by water pollution is that it kills organisms that depend on these water bodies. Moreover, it disrupts the food-chains for aquatic animals and the food they consume. Therefore, people can get disease such as hepatitis by eating seafood that has been poisoned. Some of these chemicals release release oils, poisonous chemicals, and other wastes into water. The use of chemicals in farming is one example. Farmers use some chemicals as fertilizers, or substances added to soil to help crops grow. They use other chemicals as pesticides or herbicides. These are substances that kill pests or weeds. When these chemicals seep into the ground, they may make the groundwater unfit to drink. Chemicals also may drain into rivers and lakes,…