Nsogbu mmiri na-adịgide adịgide na Bangladesh dị n'ụsọ oké osimiri nwere ike nweta ahụ efe n'ikpeazụ site na ntinye nke opekempe osisi mmiri 70, nke a maara dị ka osisi Reverse Osmosis (RO).E tinyela osisi ndị a na mpaghara ise dị n'ụsọ osimiri, gụnyere Khulna, Bagerhat, Satkhira, Patuakhali, na Bar ...
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