Megacities in Asia Essay Example | Topics and Well Written Essays - 250 words

Megacities in Asia - Essay Example Oxidation causes arseno-pyrite minerals to release arsenic. Further, when the water table is lowered by over exploiting groundwater in irrigation procedures, more arsenic is released (Karim, 2000). The most likely remediation strategy to be implemented is the use of innovative alternative drinking water sources. Although restoring the natural flow of rivers and level of ground water would have been the ideal situation, the time implications in achieving such goals are not practical. Examples would include harvesting rainwater, pond sand filters, Ranney wells and infiltration galleries. These methods are recommended because they are less costly than most of the proposed solutions. Secondly, they have the potential of providing drinking water for longer terms than the rest of the proposals. For example, harvesting rain water may incur an initial cost of putting up the structures, but once that is done, no more expenses are expected. The same applies for ponds, which require minimum