Water pollution - Wikipedia
en.wikipedia.org › wiki › Water_pollutionWater pollution is a major global environmental problem because it can result in the degradation of aquatic ecosystems. [ citation needed ] The specific contaminants leading to pollution in water include a wide spectrum of chemicals , pathogens , and physical changes such as elevated temperature.
Water Pollution | WWF
wwf.panda.org › webfieldtrips › water_pollutionWater pollution can be caused in a number of ways, one of the most polluting being city sewage and industrial waste discharge. Indirect sources of water pollution include contaminants that enter the water supply from soils or groundwater systems and from the atmosphere via rain.