Digging tips to avoid arsenic contamination

SciDev.Net: Three simple tips concerning where to dig wells in arsenic affected areas and pump water for irrigation could go a long way in reducing exposure to unsafe levels of the element in affected areas of South and South-East Asia, a review suggests. These are: wells should be dug as deep as possible in arsenic affected areas; into deep orange sands rather than grey sands or shallow orange sands; and every effort should be made to prevent pumping water for irrigation from deeper, low-arsenic ......

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