A small amount of oxygen cause many water pollution in the River. The first cause is disposing of garbage and carcasses of creatures, example the food debris sanitary napkin and animal carcasses. When the spoilage of animal carcasses will causes a lot of bacteria as a result, the amount of oxygen in the water decreases, I can sometimes smell the wastewater around my place. I hope people will not little in the river because the water is cleaner. Next, water slides are in no current flow and the rapid of the water hyacinth as a result, the water on oxygen and no oxygen to circulate in the end. People feel unhappy to see wastewater and bad smell. To conclude, we should help conserve water because clean water is essential to the livelihood of the people