Robben Island, Cape Town, is a World Heritage Site, National Monument and National Museum.
The upgrading of the island helped it to become a cultural and conservation site and maximise its economic, tourism and educational potential.
In order to support and accommodate the projected number of visitors, various infrastructure services, including water, needed to be upgraded. Arup conducted a feasibility study for this project, concluding that a range of works could be carried out.
A plan to rationalise the water system from a combination of groundwater, seawater and imported potable water from the mainland was devised. This would be accompanied by an alternative method of sewage treatment and disposal to replace the existing system of septic tanks and sea outfalls.
The collection and disposal of solid waste was assessed and improved, including the upgrade of an existing waste incinerator.
The road network was also addressed, repairing and reconstructing the existing roads for anticipated vehicle usage.
As a result of the feasibility study, the upgrading was prioritised into two phases, the first of these tackling water and waste infrastructure, resevoirs and desalination.
The second phase of the project was focused on road rehabilitation and stormwater drainage. Additionally, a sewer and pump stations were constructed along with septic tanks and a marine outfall and diffuser.