The City said it would be conducting upgrades at its Iscor Heights high level reservoirs, and this could lead to some places being left without water supply from Tuesday.
Residents in parts of Gauteng were continuing to experience large-scale water outages for almost three weeks, with little reprieve from bulk water supplier Rand Water.
Some residents in the province who were still affected by the large-scale water outages resorted to collecting rain and borehole water as maintenance work continued at some of its water systems.
It is now crunch time the days of prolonged water outages have arrived. On Sunday morning, Nelson Mandela Bay mayor Retief Odendaal announced on his Facebook page that areas in the Bay might experience water outages of up to a week at a time.