Water has been infected by germs and viruses because of human activities such as factory activities and household waste. The waste from factory is directly dumped to the nearest river or sea. Moreover, if the waste has not been filtered before, it can be more dangerous when it mixed with water. Not only factory waste, household waste also caused the water is being polluted. Many people who live near the riverbank threw their household waste directly to the river. From both the factory and household waste, the water becomes infected by a lot of risky material. The water ecosystem damaged by a lot of waste and dangerous things that makes fish and water plants died. In addition, the water changed color and it becomes smelly. Now, human cannot use the water directly anymore because it dangerous for body. In conclusion, the water is precious for human but because of human too the water cannot be using anymore.
