Ukufakwa kwamanzi kwamathawula esikhunjeni, izitsha kanye nempahla yefenisha kuyenziwa ngempilo yangempela ukuvimba ukumuncwa kwayo kwamanzi, okulungele ukuhlolwa kwamathawula wamanzi, amathawula okugeza, amathawula okugeza kanye neminye imikhiqizo yethawula.
Hlangana nezinga:
I-ASTM D 4772- Indlela yokuhlola ejwayelekile yokutholwa kwamanzi okufakwayo kwethawula (indlela yokuhlola ukugeleza)
I-GB / T 22799 "-Indlela Yomkhiqizo Wokuhlonza Wamanzi"
