1. Ukuhlakazwa, ukuxutshwa kanye nomthamo we-coagulant, i-coagulant aid kanye nesibulala-magciwane kuphrojekthi yokuhlinzeka ngamanzi.
2. Ukulungiselela kanye nomthamo wezixazululo ezihlukahlukene ze-acid-base.
3. Ukulungiswa kanye nomthamo wesixazululo sokuvuselela ekuthambiseni nasekukhipheni usawoti emanzini.
4. Ukulungiswa kanye nomthamo wokujikeleza kokupholisa izinga lokuqiniswa kwamanzi.