Amanzi angcolisekileyo (amdaka) akhutshelwa kumthombo wongcoliseko, ngenxa yesixa esikhulu esipheleleyo okanye ukuxinwa kongcoliseko, akahlangabezani neemfuno zemigangatho yokukhutshelwa okanye akahlangabezani neemfuno zomthamo wokusingqongileyo, ngaloo ndlela ehlisa umgangatho wokusingqongileyo wamanzi kunye neenjongo zokusebenza. , kufuneka iphuculwe ngokwenziwa.Kwinkqubo yokucocwa kwamanzi amdaka, izalathi ezifuna ukujongwa ziquka i-ammonia nitrogen, i-phosphorus iyonke, i-nitrogen epheleleyo, i-COD, i-pH, i-oksijini enyibilikileyo, kunye nemfuno ye-oksijini ye-biochemical.