Every effort must be made to prevent bilharzia infection. Never pass urine into a stream or pool of water. Standing or slow-moving water such as farm dams and irrigation furrows are the home of the bilharzias snail, especially in the eastern areas of South Africa and in Zimbabwe. Fast-moving streams are usually safe. Swimming or bathing in infected water must be avoided as this is the common way of getting bilharzias. Efforts are being made to kill the snails in high risk areas.
Do not swim in standing water where there are bilharzia snails.