The City of Cape Town says despite an earthy flavour to tap water, in some areas, the water remains safe to drink and compliant with SANS241 standards.
Samples have been collected for testing in affected areas throughout the city.
The City of Cape Town says there are currently experiencing high levels of geosmin in the water supply from the Theewaterskloof Dam.
This is affecting the taste and smell of the water supplied from the Faure and Blackheath Water Treatment Plants to various areas across Cape Town, primarily the central and southern suburbs.
Officials are monitoring the situation and say it may take some time for the taste and smell of the water to normalise.