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Amakhemikhali wokwelapha amanzi amakhemikhali aklanyelwe ukubulala futhi ahlanze amanzi emachibini okubhukuda, amasistimu wamanzi kamasipala, Izinqubo zezimboni, kanye ne-aquaculture. Ziqeda amabhaktheriya, ulwelwe, amagciwane, nezinto ezingcolisayo eziphilayo, zigcina amanzi aphephile, acwebezelayo nehlanzekile. Amakhemikhali asuselwa ku-chlorine afana ne-calcium hypochlorite asetshenziselwa kabanzi ukuthuthwa kwendle okusheshayo, okuthembekile.