1. Isendlalelo I-Vietnam, isizinda esibalulekile sezolimo nezimboni eNingizimu-mpumalanga ye-Asia, ibhekene nezinselelo ezinzima zokunukubezwa kwamanzi, ikakhulukazi ukungcola kwemvelo (COD) kanye nezinto eziqinile ezimisiwe (i-turbidity) emifuleni, emachibini nasezindaweni ezisogwini. Ukuqapha kwekhwalithi yamanzi okujwayelekile kuncike ekuthathweni kwesampula ngelebhu, ...
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