The question many local authorities have, is what the effect of proposed densification would be on the existing engineering infrastructure? The simple answer is that densification has an adverse effect on infrastructure, as the utilisation of capacity is increased. But the question remains how negative this is, as opposed to the benefits that densification could offer. The City of Cape Town recently commissioned a study to determine the effect of densification on water related services. Through GLS's involvement in the study, as well the company's other experiences of master planning of water and sewer networks throughout South Africa, some light can be shed on this issue