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Adequate information about the actual range of arsenic
pollution in Bangladesh is not available at government or non-governmental
level . Though the Dhaka Community Hospital and the school of
Environmental Studies of Jadavpur University in Calcutta detected high
level of arsenic concentration in the tube-well water of 47 districts out
of the 64 districts surveyed, but the study reflected only a partial
picture of the actual situation. Out of the existing 2-2.5 million
tube-wells across the country, the DCH-SOES survey tested only 30,000 till
May 2001. Therefore, the true picture of arsenic contamination in
Bangladesh will never emerge until and unless all the tube-wells are
brought under investigation. It is impossible for any private organization
to do this huge task alone. For this reason, the DCH and SOES decided to
conduct an extensive survey jointly in a selected police stations of the
country.
On the basis of a preliminary survey conducted in all 64
districts of Bangladesh in early 2000, Ramganj thana of luxmipur district
has been chosen for the extensive survey. The preliminary survey detected
high level of arsenic presence in the groundwater of Luxmipur district.
That is why Ramganj thana was chosen for the follow-up study on
arsenic which is still on progress.
The latest survey of DCH-SOES shows that Luxmipur, a
southeastern district of Bangladesh, is the worst arsenic affected area of
the country. And Ramganj is the worst affected among the four thanas of
the district. High level of arsenic concentration was detected in the
groundwater of Ramganj. Some 609 tube-wells of district were tested, of
which 29 were found contaminated with dangerous level of arsenic (above
1.0 mg/1).All the 29 tube-wells are situated in Ramganj. Besides, 62
tube-wells of the district contain 0.70 to 1.0 mg/1 arsenic of whose, 60
are in Ramganj.
The river Meghna is flowing beside Ramganj, having an
area of 299 square kilometer and 287,648 population living in 132
villages. A total of 404 tube-wells of 27 villages were tested, of which
only 3 percent or 12 tube-wells were found with arsenic below the maximum
permissible limit, i.e.0.05 mg/1. Water of the rest 97 percent or 392
tube-wells were found heavily poisoned by arsenic (>0.05mg/1).
Arsenic presence between 0.05 and 0.29mg/1 was found in
37 percent or 149 tube-wells, between 0.30 and 0.69 mg/1in 15 percent or
154 tube-wells, between 0.07 and 1.0mg/1 in 15 percent or 60 tube-wells,
and above 1.0 mg/1 in rest 7 percent or 29 tube-wells. These statistics
shows the dire state of arsenic contamination in Ramganj thana
All the tube-wells of two villages- Shibpur and Daspara-
were tested in the survey. But none of those was found safe. Each and
every tube-well of these villages contain arsenic above the maximum
permissible limit.
The DCH and SOES carried out a survey in 18 villages of
Ramganj thana for arsenic patients. Of them, in 12 villages survey team
identified peoples are suffering form various arsenical skin-lesions.
Samples of hair and nail numbering 400 each, along with 11 skin-scales and
250 urine samples were collected from these villages and tested in
laboratories. High level of arsenic was detected in each and every sample.
This clearly indicates that most of people of these village were affected
by arsenic poisoning, although symptoms of arsenicosis were not found in
the bodies of every people. A total of 736 people were examined in the
survey. Of them, symptoms of arsenical diseases were found in the bodies
of 16 percent of 120 people.
While comparing with other arsenic affected areas of
Bangladesh, the percentage of patients appears to be less even though they
are consuming high level of arsenic through drinking water. The reasons
are not clear but it is learnt from the villagers that most of them were
previously using surface water and for last few years only they are using
tube-well water. Moreover, people of this area of Bangladesh are of better
economic condition, so they are getting better nutrition. There is a
co-relation between arsenic poisoning and nutrition. Those who take
nutritious food, do not usually become the victims of arsenic
contamination.
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