Ukuze kuhlangatshezwane nezidingo zobunjiniyela basolwandle obuthuthuke ngokushesha futhi kuhlinzekwe ngesisombululo esingabizi kakhulu, i-NSEN iklama ivalvu yebhabhathane engangeni manzi olwandle yokupholisa amanzi enuzi kanye nokukhipha usawoti njll. Imbobo kanye nediski yalolu chungechunge zivikelwe ngengubo ekhethekile ukuvimbela ukugqwala emanzini olwandle. Xhumana nathi ukuze ufunde kabanzi noma wenze ngezifiso ivalvu yephrojekthi yakho.