Greywater recycling in Botswana


Al-Tashatha Secondary School, Francistown / Botswana / 2017


Greywater recycling




Connected consumersShower and hand basin, washing water
UseToilet flushing, irrigation
Treatment volume grey water5.000 Liters/ day


Water is scarce on the campus of the university in Francistown, Botswana. A problem that affects the entire country and for which the country has found a solution together with INTEWA GmbH from Aachen: The INTEWA system creates its own water cycle on the campus and treats 5000 litres of grey water from the showers and washbasins every day. The university uses the recycled water to irrigate the otherwise dry school grounds or to flush the toilets and use the washing machine. Such grey-water systems are not common in Botswana so far. "The local people hardly know this technology for saving water," says Oliver Ringelstein from INTEWA. "It is therefore all the more important that the local authorities there address precisely such possibilities." And this is exactly what the university in Francistown did: they engaged INTEWA via a sales partner in South Africa. Together with a local engineering office, the Aachen-based company planned a greywater system adapted to the campus. With the new system, students and professors were able to significantly reduce water consumption. Because the project went so well, INTEWA is now planning similar greywater systems for other institutions in Botswana.