Amalaphu angangeni manzi ngamalaphu athe, ngokwendalo, okanye aye aphathwa ukuba abe, amelana nokungenwa ngamanzi kunye nokumanzisa.
Sineendlela ezimbini zokuphumeza ilaphu elingenamanzi.
Enye yilaphu elilaphu elinqatyisiweyo elingangeni manzi, elinye lilaphu eliNgqunyiweyo, elifana nePU kunye nePVC, iPE njl.