Amakhemikhali wokwelapha amanzi aklanyelwe ukubulala amagciwane, ukuhlinza, nokugcina ikhwalithi yamanzi emachibini okubhukuda, Izinhlelo zokuphakela zikamasipala, izinqubo zezimboni, kanye ne-aquaculture. Ziqeda amagciwane, amagciwane, ulwelwe, nezinto ezingcolisayo eziphilayo, ziqinisekisa amanzi aphephile, acwebezelayo nehlanzeko. Amakhemikhali asuselwa ku-chlorine afana ne-calcium hypochlorite asetshenziselwa kabanzi ukuthuthwa kwendle okusheshayo nokusebenzayo.