99- Abstract #840
Groundwater in Bangladesh is contaminated with Arsenic, which occurs
naturally in alluvial and deltaic sediments. The first official detection
in 1993 and subsequent confirmation after 1995 of high levels of Arsenic
in numerous shallow and deep wells in various parts of the country has
raised serious health concerns. Recent investigations, though incomplete,
confirm that the occurrence of Arsenic in groundwater is more widespread
than assumed at first and that it already affects a large number of people.
The latest statistics available on the arsenic contamination in groundwater
indicates that 52 districts around 80% of the total area of Bangladesh
and about 40 million people are at risk. It is estimated that at least
1.2 million people are exposed to Arsenic poisoning with tens of millions
potentially exposed. The reported number of patients seriously affected
by arsenic in drinking water has now risen to 60001 demands extensive research
in this field.
Emission inventories are essential tools for assessing releases to the environment. Analysis on emissions inventory data can be useful for environmental program planning and management purposes as well as identifying emissions that are potentially above the standard level. In identifying only the level of concentration is not enough; the concentrations resulting from the emissions are important to estimating exposure and risk. Geographic Information Systems (GIS) used in this study for visualizing water quality characteristics in Union census block, distribution of arsenic groundwater concentration, and exposure risk zones for two northeastern districts Kishoreganj and Netrokona of Bangladesh.