Affected households might still experience water flow for a short while after closure.
Image used for illustration. Picture: iStock
Johannesburg Water has implemented strict water throttling measures across parts of the city in response to surging consumption levels and to safeguard the stability of its reservoirs.
The entity said the measures are meant to “regulate demand and protect reservoir capacities,” while ensuring continuous water availability for all residents.
“This strategy aims to regulate demand and protect reservoir capacities, thereby stabilising the supply and ensuring a consistent water supply for all residents.”
From Sunday, several reservoirs and towers across Johannesburg are being throttled for either 12 or 24 hours per day, depending on the region.
In Region A, President Park Reservoir was throttled from 6am to 6pm.
Meanwhile, a full 24-hour throttling has been imposed on the following areas from 8pm on Sunday until 8pm on 12 May:
Johannesburg Water noted that affected households might still experience water flow for a short while after closure.
“The inlet and outlet of the listed reservoirs will be fully closed during this period,” it said.
The entity cautioned that water restoration after reopening may take between one to three hours.
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Johannesburg Water added that these periods will be used to carry out maintenance work on local infrastructure.
“Johannesburg Water will use this time to complete any outstanding infrastructure repairs and maintenance in the affected areas.”
The utility has acknowledged that times are approximate and could shift due to operational constraints.
Residents are urged to use water sparingly, report any visible leaks, and keep emergency supplies on hand where possible.
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Meanwhile, the City of Tshwane has announced a scheduled cleaning of the Montana Reservoir from Monday to Wednesday, following reports of water discolouration and as part of its regular maintenance programme.
“Regular cleaning of storage reservoirs is essential to ensure water quality and system integrity,” the city said.
During this time, water will be supplied to residents in the Montana Reservoir zone through a temporary bypass pipeline, which has a lower capacity than the main reservoir. As a result, pressure will be reduced, especially during peak hours.
The city cautioned that the maintenance will also impact the Magalieskruin, Sinoville High-Level, and Sinoville Low-Level reservoirs.
Residents in the following areas may experience low water pressure or intermittent supply:
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Tshwane has urged residents to minimise water use during the maintenance window by following these water-saving tips:
“The city appreciates the public’s cooperation and understanding as we work to maintain the reliability and quality of our water infrastructure,” it said.
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