Water Pollution Literature Review Essay

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Literature Review Water pollution Water pollution is the contamination of water bodies such as lakes, rivers, oceans, aquifers and groundwater that very often causes by human activities. Water pollution occurs when pollutants such as particles, chemicals or substances that make water contaminated, discharged directly or indirectly into water bodies without enough treatment to get rid of harmful compounds. Pollutants get into water mainly by human causes or factors. Water pollution can be a Point-source, Non Point-source, or transboundary in nature (EPA 2013). Point source pollution happens when the pollutants when one source such as factory disposal comes into contact with the water source. A scenario where the pollutant spread to many other…show more content…
Nutrients pollution, come from wastewater, fertilizer and sewage contain high level of nutrient. The nutrients encourage the growth of algae and weed which use up the oxygen and causes the living organism in water to be lack of oxygen and eventually causes death. Nutrient pollution has impacted many streams, rivers, lakes, bays and coastal waters for the past several decades, resulting in serious environmental and human health .issues, and impacting the economy. Algea growth in aquatic system can lead to damages of water quality, food resources and habitat. Since algae consume dissolved oxygen in water, this can cause depletion of dissolved oxygen that very crucial to fish and other aquatic creatures to survive. Algal blooms is condition where algae grow progressively and this condition cause decreasing in dissolved oxygen in water and also can affect the health of water system included living organism like fish. Depletion of dissolved oxygen can cause extinction of fish population in that system. Some algae can disrupt human health because of their capabilities of elevated toxins and production of parasites that can disrupt human immune system. Human can be affected if they come in contact with polluted water, eat tainted fish or shellfish, or drink that polluted water. Surface water pollution caused by hazardous substances that were in contact with water surface. The hazardous substances will dissolve in the water or be mixed physically. EPA 2013 was reported about 40% of America’s rivers and 46% of America’s lakes are too polluted for fishing, swimming, or aquatic

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