Isigayo sesando sokudonsa amanzi siwumshini ohlose ukuchoboza izinto ngokushayisana kwesando esinesivinini esikhulu nezinto zokwakha. Ilungele ukugaya izinto ezingavuthiwe njengamakhoba, ummbila, ukolweni, ubhontshisi, amakinati, njll. Idizayini ekhethekile yokudonsa amanzi yokugaya isando sokuphakela ingaqinisekisa indawo enkulu yokugaya futhi ithuthukise ukusebenza kahle ngama-40%. Kuyisidingo ezimbonini nasezimbonini ezikhiqiza ukudla okunosayizi omkhulu namaphakathi.