It is a serious but neglected issue throughout Bangladesh. According to the Department of Environment DOEthe perfect sound condition for Bangladesh is 45 dB for the daytime and 35 dB for the night in peaceful areas and 50 dB for the daytime and 40 dB for the night in residential areas.
In a small but significant number of cases, some new government wells are themselves contaminated with arsenic above the national standard. Environmental levels of arsenic vary.
Arsenic and human health: The Bangladesh Government has taken a rural sanitation programme from October to implement the facilitation, construction and installation of twin pit latrine. Agro based industries like sugar, pulp, paper, tanneries and value added industries like textile, garments, pharmaceutics, oil refineries, fertilizer and chemical industries are the major contributors for air pollution.
This affects the salinity of the groundwater in the countryside. However, with over 8 million wells constructed, approximately one in five of these wells is now contaminated with arsenic above the government's drinking water standard. However exposed, arsenic poisoning in drinking water has led to a health crises in third world countries such as Bangladesh, but also threatens affluent nations like the United States.
Inapproximately 57 million residents used water contaminated with arsenic from these shallow wells. According to the publication by the US Agency for Toxic Substance and Disease Registry, sincethe use of arsenic-containing wood preservatives have been phased out for certain residential uses such as play structures, picnic tables, decks, fencing, and boardwalks, but are still used in industrial applications.
In the Ganges Deltathe affected wells are typically more than 20 meters and less than meters deep. Burning of Fossil Fuel. Some have argued that the 10 ppb federal standard is still too high, while others have argued that 10 ppb is needlessly strict.
Safe drinking water disappearing fast in Bangladesh Read more According to the government, 5 million village wells were tested betweenwith pumps painted red or green according to whether they were safe or unsafe.
Solid Waste and Sewage Disposal. Groundwater comes from deep tubewells, which are few in number. Inan estimated 20 million people drank arsenic-laced water.
Organic arsenic species are generally considered innocuous since they are poorly absorbed into cells [ 6 ]. The noise pollution is also a major health hazard in Bangladesh.
Although the total arsenic concentration total concentration of DMA, MMA, and inorganic arsenic has been used by previous studies, it is not considered a sufficient measurement for health risk assessment [ 89 ].
A Urban Transport Project has been launched by the Government to improve traffic system, envisage good bus services, improve road networks by constructing over-bridges, fly-overs, underpasses and envisages a positive role for non-motorized transport.
By disseminating knowledge on health risks associated with arsenic exposure, a successful public-awareness campaign could change health behaviours. Blackfoot disease and arsenic: We hope that this careful review of possible source of arsenic exposure will contribute to reducing arsenic-related health hazards in humans.
At present noise level in Dhaka city are estimated ranging from 60 to decibel. Banning of Polyethylene Bags. While the study done by Ahmad et al.
Guidelines for drinking-water quality: Arsenic in ground water poses a serious environmental hazard for Bangladesh. Many common arsenic compounds can dissolve in water, thus arsenic can contaminate lakes, rivers, or underground water by dissolving in rain, snow, or through discarded industrial wastes.
Air pollution mainly occurs due to burning of fossil fuels like coal, petroleum etc and associated black smoke. Ineffective water purification and sewage systems as well as periodic monsoons and flooding exacerbated these problems.
Water sources free of arsenic may be few and far between, taking a practical toll on a person's time available for work.
In unpolluted areas, approximately 50 ng or less arsenic is inhaled per day [ 47 ]. This is especially important in areas where the potable water is provided by filtering the water extracted from the underground aquifer.] The Department of Environmental Protection for New Jersey set a drinking water limit of 5 ppb in The IDLH (immediately dangerous to life and health) value for arsenic metal and inorganic arsenic compounds is 5 mg/m 3 (5 ppb).
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.
Knowledge of Arsenic in Drinking-water: Risks and Avoidance in Matlab, Bangladesh (Block A) in Matlab, Bangladesh ous arsenic-related issues.
Section three was designed to reveal household sources of drinking- and cooking-water, including questions on avoidance of exposure presence of elderly, education, arsenic-information sources. Every day, more than million people are exposed to arsenic-contaminated drinking water in Bangladesh, Cambodia, China, India, Myanmar, Nepal, Pakistan and Vietnam.
Inthe U.S. Environmental Protection Agency changed the standards for arsenic levels in drinking water. At that time, the agency had estimated that more than 36 million Americans were drinking water that contained arsenic levels at or above 3 parts per billion.
The world’s worst environmental health hazard: arsenic in Bangladesh. The scale of the problem In the last ten years arsenic has been identified in the drinking water of more than 30 million people in Bangladesh, making it presently the world’s largest environmental hazard.
The World Bank has recently invested large sums of money .Download