Usoro mmiri ọṅụṅụ ọha na eze na-eji ụzọ ọgwụgwọ mmiri dị iche iche na-enye obodo ha mmiri dị ọcha. Sistemu mmiri ọha na-ejikarị usoro ọgwụgwọ mmiri, gụnyere coagulation, flocculation, sedimentation, filtration na disinfection. Nzọụkwụ 4 nke Community Wa...
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