Ukuhlinzekwa kwamanzi ezimbonini nasezimayini zasemadolobheni kanye ne-drainage, ubunjiniyela bakamasipala, ukuhlanzwa kwendle.Ukujikeleza nokuthuthukisa amanzi ngensimbi, i-metallurgy, izikhungo zikagesi, ukwakhiwa kwemikhumbi, izimboni zamanzi, njll. Amaphrojekthi okonga amanzi kanye nokubusa kwemifula.Ukuchelela emapulazini, ukufuywa kwezilwane zasemanzini, amapulazi kasawoti, njll.