Arsenic-contaminated drinking water is a major health hazard, with chronic exposure causing illnesses and cancers the world health organization estimates that in bangladesh, for example, over 5. Groundwater contamination groundwater in bangladesh, which is used as drinking water, is found to be contaminated with many heavy metals, including arsenic, lead, cadmium, chromium, copper, mercury, nickel, and uranium. There is no known way to cure chronic arsenic poisoning, which makes solving the problem of arsenic in drinking water a critical issue for millions of people worldwide more effort is needed to carry innovations from laboratory to use.
A simple filtration system used in bangladesh and other countries removes dangerous arsenic from drinking water the natural presence of arsenic and other toxins in groundwater, the most common source of drinking water, is considered a worldwide public-health crisis and an unprecedented natural disaster. Arsenic contamination of soil, due to natural deposition and use of high arsenic groundwater for irrigation, is now emerging as a serious problem in bangladesh this situation could threaten agricultural production, food quality and ultimately the health and well being of many people in the country. Abstract groundwater is a clean source of drinking water however, the presence of elevated concentrations of inorganic arsenic in groundwater, particularly in the regions of bangladesh and the eastern part of india, is a cause for concern. Arsenic in drinking water and resulting toxicity took place in the who south -east asia regional office, new delhi, india, from 29 april to 1 may 1997 the consultation provided an opportunity for the participants to exchange experience and.
Contamination of drinking-water by arsenic in bangladesh: a public health emergency allan h smith,1 elena o lingas,2 & mahfuzar rahman3. Exposure to high or even moderate levels of the toxin arsenic through drinking water can elevate the risk of cardiovascular disease mortality, according to a new study published in british medical. A recent estimate suggests an annual excess of some 24 000 deaths in bangladesh from all causes attributable to drinking water with arsenic concentrations 50 µg/l18 this paper addresses causality and as such is pertinent to discussion about rcc and arsenic regardless of the source or place of exposure. Today, 98 percent of the population gets drinking water from a technologically improved source - water which comes from a manmade structure- up from 79 percent in 1990 bangladesh also largely succeeded in providing access to basic sanitation.
Key words: arsenic, water pollution, water supply, drinking-water, risk factors, arsenic exposure, awareness, bangladesh introduction the demand for environmental quality in developing countries is generally considered to be relatively low due to poverty. Unicef estimated that 12 million people in bangladesh were drinking arsenic contaminated water in 2006, and the number of people showing symptoms of arsenicosis was 40,000, but could rise to one million (unicef 2006. Arsenic in drinking water is a problem in many countries around the world, including bangladesh, chile, china, vietnam, taiwan, india, and the united states 1 arsenic may also be found in foods, including rice and some fish, where it is present due to uptake from soil and water. Background: arsenic is a potent pollutant that has caused an environmental catastrophe in certain parts of the world including bangladesh where millions of people are presently at risk due to drinking water contaminated by arsenic.
The lowering the drinking water standards by usepa, a review of arsenic removal technologies was made to consider the economic factors involved in implementing lower drinking water standards for arsenic ( chen et al, 1999. Arsenic contamination of groundwater in bangladesh-scale of the problem the problem was first identified in bangladesh in 1993 in the far west of the country (adjacent to west bengal in india), after reports of contamination in india in 1988. The danger of elevated arsenic concentration in waters in these countries was under lined by who, which estimated the recommended limit for arsenic concentration in drinking waters up to 10 μg/larsenic-contaminated drinking water can cause adverse health effects in human beings. Summary excessive levels of arsenic in drinking water is a vast health problem in southeast asia several viable approaches to mitigation could drastically reduce arsenic exposure, but they all require periodic testing. The government needs a national plan to end arsenic exposure through drinking water and to install new wells in the areas where the risk of arsenic contamination is high.
Data from the studies in taiwan and bangladesh were pooled earlier in a meta-analysis that examined extreme arsenic exposure categories (village drinking water levels or living in a high-vs-low-arsenic area) the pooled relative risk for diabetes associated with high versus low arsenic areas was 252 (95% ci: 169 - 375. An estimated 43,000 people die each year from arsenic-related illness bangladesh isn't taking basic, obvious steps to get arsenic out of the drinking water of millions of its rural poor. Arsenic poisoning from drinking water is a serious concern  countries with elevated arsenic levels in their groundwater include bangladesh, taiwan, mexico, chile, china, and india. Millions of people in bangladesh are still being exposed to arsenic in their drinking water, decades after the problem was identified sam loewenberg reports from dhaka in the 1990s, arsenic was discovered in wells intended to provide fresh drinking water in bangladesh.
Arsenic in drinking water arsenic is a semi-metallic element occurring naturally and abundantly throughout the earth it commonly surfaces by natural processes and often has a negligible presence in water, but can also be exposed in devastating amounts both naturally and due to human industry, typically agricultural irrigation or mining. Harvard arsenic project maintained by harvard university's richard wilson, this comprehensive site focuses on the public health aspect of acute arsenic poisoning from drinking water, with an emphasis on the catastrophic problem of arsenic poisoning in bangladesh. In bangladesh, people dig deep wells to find drinking water free of naturally occurring arsenic but farmers are also pumping water from those deep aquifers, threatening the water supply and. General population exposure to arsenic is mainly via intake of food and drinking water food is the most important source, but in some areas, arsenic in drinking water is a significant source of exposure to inorganic arsenic.