Thanks Rebecca, but  you need to tell the entire story instead of focusing on a small aspect. Here’s some info that you may find interesting, care of Wikipedia.

There are 3 public stakeholders who ensure the entire country has access to clean water for domestic, agricultural and industrial use: Dept of Water Affairs (DWA) which formulates and implements water resource management, as well as drinking water supply; Water Boards which supply bulk water & also participates in water resources management; Municipalities, who buy & resell bulk water thru their distribution networks.

Cape Town has a mix of water suppliers, including the Trans Caledon Tunnel Authority (TCTA) – operator of the Berg River Dam – which sells bulk water to the government, represented by the Department of Water as the owner of the Water Boards, that treat the water and sell it on to municipalities and mines. The government is the 100% owner of the various Water Boards.