Water Pollution in Bangladesh - 1429 Words

Water Pollution in Bangladesh INTRODUCTION Water is the most vital element among the natural resources, and is crucial for the survival of all living organisms. The environment, economic growth and development of Bangladesh are all highly influenced by water - its regional and seasonal availability, and the quality of surface and groundwater. Spatial and seasonal availability of surface and groundwater is highly responsive to the monsoon climate and physiography of the country. Availability also depends on upstream withdrawal for consumptive and nonconsumptive uses. In terms of quality, the surface water of the country is unprotected from untreated industrial effluents and municipal wastewater, runoff pollution from chemical fertilizers†¦show more content†¦Water quality data at two stations of the river Buriganga in 1998, Hazaribag and Chadnighat, showed that DO and BOD exceeded the tolerable limits in the months of January, February, March and December, with the worst situation prevailing in the months of January a nd February The seasonal variation of water quality in the Buriganga is linked with seasonal variation of water flow and the operation of tanneries. Source: Department of Environment, 2000) Groundwater Pollution Groundwater has different uses, but the standard for its quality was set nationally. Groundwater was treated as the best source of safe drinking water, before arsenic contamination was reported. However, 54 per cent of hand pumped tubewells were found to have fecal contamination, due to poor wellhead design, faulty construction and management, but the aquifers themselves were not polluted (Hoque, 1998). Source: SWMC Arsenic High levels of arsenic in groundwater can cause serious human health problems if imbibed for a long time (from 5 to 15 years); including skin ailments, damage to internal organs, skin and lung cancers, and eventual death. The recent major studies carried out on arsenic reveal that among 30,000 tubewells studied, 2,000 of them exceeded the national standard of 0.05 mg/l for drinking purposes (the WHO guideline is 0.01 mg/l). The problem is acute in tubewells abstracting groundwater from 10 m to 100 m depths in the Southeast, South Central (the northern part only), and SouthwestShow MoreRelatedInadequate Sanitary Facilities At Dhaka Water And Sewerage Authority ( Dwasa ) Essay1596 Words   |  7 Pagesin Bangladesh. 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