Ukuthathwa kwamanzi kweetawuli kulusu, izitya kunye nomgangatho wefanitshala ucofa kubomi benene ukuvavanya ukufakwa kwamanzi, okufanelekileyo kovavanyo lwamanzi, iitawuli ze-can, iitawuli zegumbi, iitawuli zegumbi lokuhlambela, ezinye iitawuli kunye nezinye iitawuli zokuhlamba, iitawuli zegumbi lokuhlambela, ezinye iitawuli zexabiso.
Dibana nomgangatho:
I-ASTM D 4772- indlela yovavanyo esemgangathweni yokuthathwa kwamanzi angaphezulu kweelaphu zetawuli (indlela yokuhambahamba)
I-GB / T 22799 "" -Indlela yovavanyo lwemveliso yamanzi "
