South African President Cyril Ramaphosa is due to lead a delegation of government leaders to Hammasnkraal, a township north of the capital, Pretoria, where there was a deadly outbreak of cholera.
Mr Ramaphosa said the outbreak had caused devastation and government agencies had been working on measures to contain the spread of the disease.
His visit follows the death of at least 26 people, mostly in Hammanskraal, the epicentre of the outbreak.
More than 130 residents have been treated for the waterborne disease.