2 Water pollutionFresh water, salt, water from rain or groundwater can be contaminatedby materials that can make it harmful. Polluted, it is the cause of variousdiseases and can seriously affect health.First, it can be contaminatedby organic matter. Thus, chlorides and nitrates in human and animalwaste can also contaminate the groundwater from shallow wells.But also the pollution of ground water table are due to overexploitationof the soil.Fertilizers, pesticides, insecticides… All these product seepsinto the soil or runoff to the lake, river and sea . By Romario
3 Water Pollution (Part 1) Water pollution is the contamination of water bodies (lakes, rivers, oceansand groundwater). The pollutions of water can be in various forms: chemical,bacteriological but also, thermal pollution, and water or water bodies may befresh, brackish, salty groundwater or surface water.It may even be rain or dew,snow or polar ice. The major sources of water pollution are municipal,industrial, and agricultural. Municipal water pollution consists of waste waterfrom homes and commercial establishments. Agriculture, commercial livestockand poultry farming are sources of pollution because they throw many organicand inorganic pollutants into surface water and groundwater.Waste materialslike acids, alkalis, toxic metals, oil, grease, dyes, pesticides and evenradioactive materials are poured into the water bodies by many industrial units.In the United States, the industries contribute to more than half of the totalWater pollution. What are the causes of water pollution? This question hasno simple answer. Water pollution can be defined as anything humans do tocause harmful effects to our bodies of water. This can include pollution ofrivers, lakes, oceans, and ground water pollution. The causes of pollution inthe water are virtually endless.Manufacturing plants are major causes of waterpollution, using bodies of fresh water to carry away waste that can containphosphates, nitrates, lead, mercury and other harmful and toxic substances.
4 Water Pollution (Part 2) By YounesEven the hot water that factories often discharge can raise thetemperature and change the chemistry of bodies of water, causingwhat's called thermal pollution. Construction byproducts are anotherone of the major causes of water pollution: cement, metals, plasticsand lubricants are the usual culprits. In addition to large industry,individual consumers round up the list of causes of water pollution.We pour our waste chemicals and detergents into our rivers. Smallboats and large ships alike are responsible for spilling oil into ourseas and oceans, and dropping untreated sewage into the water.These pollutants are carried by waves to even the most remoteparts of our oceans.