Water pollution can cause a number of health problems in humans, including gastrointestinal illnesses, respiratory infections, and skin irritation. It can also lead to the spread of disease-causing bacteria and viruses. In the environment, water pollution can cause the depletion of oxygen in water bodies, which can lead to the death of aquatic plants and animals. It can also cause the contamination of groundwater and surface water, which can be detrimental to the quality of life for plants, animals, and humans.