Articles | Volume 379
Proc. IAHS, 379, 409–414, 2018
Proc. IAHS, 379, 409–414, 2018

Pre-conference publication 05 Jun 2018

Pre-conference publication | 05 Jun 2018

Guidelines for rainwater harvesting system design and assessment for the city of Johannesburg, South Africa

John Ndiritu et al.

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Cited articles

Armitage, N., Fisher-Jeffes, L., Carden, K., Winter, K., Naidoo, V., Spiegel, A., Mauck, B., and Coulson, D.: Water Sensitive Urban Design (WSUD) for South Africa: Framework and Guidelines, WRC Report No. TT 588/14, Water Research Commission, Pretoria, South Africa, 2014. 
Campisano, A. and Modica, C.: Optimal sizing of storage tanks for domestic rainwater harvesting in Sicily, Resour. Conserv. Recycl., 63, 9–16,, 2012. 
Dobrowksy, P. H., Mannel, D., De Kwaadsteniet, M., Prozesky, H., Khan, W., and Cloete, T. E.: Quality assessment and primary uses of harvested rainwater in Kleinmond, South Africa, Water SA, 40, 401–406,, 2014. 
Evans, C. A., Coombes, P. J., and Dunstan, R. H.: Wind, rain and bacteria: the effect of weather on the microbial composition of roof-harvested rainwater, Water Res., 40, 37–44, 2006. 
Hanson, L. S. and Vogel, R. M.: Generalized storage-reliability-yield relationships for rainwater harvesting systems, Environ. Res. Lett., 9, 1–10,, 2014. 
Short summary
The research developed guidelines for determining the required tank size for rainwater harvesting (RWH) systems in the City of Johannesburg, South Africa. This research also informs how many days the system of the specified tank size would provide and how reliable this supply would be. The developed guidelines can help to assess the feasibility of RWH systems and if feasible, determine appropriate size of the storage. This way innapropriate investment decisions on RWH systems can be prevented.