[The Conversation Africa] As the planet gets hotter and freshwater sources dry up, cities and towns will not be able to continue the global norm of using millions of litres of clean, drinkable water to flush toilets. South Africa's Water Research Commission recently commissioned a study into using seawater to flush toilets in Cape Town. Water engineering lecturer Teboho Mofokeng researches water management and reuse in South Africa and she co-authored the study. She spoke to The Conversation Africa about Capetonians' willingness