WEFTEC, Ihe ngosi nka na ihe ngosi nka nke Water Environment Federation kwa afọ, bụ nzukọ kachasị ukwuu nke ụdị ya na North America ma na-enye ọtụtụ puku ndị ọkachamara na-ahụ maka mmiri mmiri si gburugburu ụwa mmụta kacha mma nke mmiri na ọzụzụ dị taa.Aghọtakwaara dị ka ihe ngosi mma mmiri kachasị ukwuu n'ụwa kwa afọ, nnukwu ụlọ ngosi WEFTEC na-enye ohere na-enweghị atụ maka teknụzụ na ọrụ kacha mma n'ọhịa.
Oge nzipu: Ọgọst-14-2013