Rand Water, the bulk supplier to most of Gauteng, said on Tuesday 20 October 2026 that it is pumping at maximum capacity while consumption by several municipalities has reached record levels. It warned that it may cut supply to customers who keep drawing more than their allocations. The statement, reported by Engineering News and IOL, is aimed at municipalities, but the consequences would be felt by every factory, hotel, hospital and office that depends on their taps.
Johannesburg is drawing 445 megalitres a day more than its licence
According to the figures published by both outlets, the City of Johannesburg is consuming 1,801 megalitres a day against a licensed allocation of 1,356 megalitres a day, an excess of 445 megalitres. Engineering News reports that the city also exceeds a temporarily increased limit of 1,528 megalitres a day, and that Rand Water wants an immediate reduction of 273 megalitres and a gradual reduction of 445 megalitres to bring it back into line.
The City of Tshwane is using 794 megalitres a day. IOL puts its allocation at 667 megalitres, while Engineering News gives 752 megalitres as a licensed and temporary figure. Earlier Rand Water statements show 667 megalitres as the permanent allocation and 752 as a temporary quota, so the difference appears to come from which of the two limits each outlet quoted. On the temporary figure, Rand Water wants an immediate cut of 42 megalitres, and a gradual cut of 127 megalitres to reach the permanent figure.
The City of Ekurhuleni is the exception among the big three. Its consumption of 1,005 megalitres a day is below both its permanent allocation of 1,022 megalitres and its temporary one of 1,152 megalitres, according to Engineering News. Emfuleni is above its permanent allocation of 239 megalitres a day. The two outlets report different consumption figures for Emfuleni, 415 and 315 megalitres, so that number should be treated as unconfirmed until Rand Water’s own data is checked.
IOL also lists smaller customers over their limits, including Mogale City, Rustenburg, Midvaal, Lesedi, Ngwathe, Madibeng and Royal Bafokeng, each by between one and 11 megalitres.
The same warning has been issued before
This is not a new problem. In September 2025, Engineering News reported that Rand Water had warned of “extremely” high consumption, with Johannesburg at 1,701 megalitres a day against the same 1,356 megalitre target. The utility said then that about 77% of the water it produces goes to Johannesburg, Tshwane and Ekurhuleni. In February 2026, EWN reported that Rand Water spokesperson Makenosi Maroo said the utility would reduce supply to some areas after talks with high-consuming municipalities.
The repetition matters for planning. Johannesburg’s draw has risen from 1,701 to 1,801 megalitres a day between the September 2025 and October 2026 figures, a gain of 100 megalitres, even though the utility says it has repeatedly alerted municipalities.
Curtailment would hit users who did nothing wrong
Rand Water’s position, in a statement quoted by both outlets, is that “sustained overconsumption is making it increasingly difficult to balance supply across the network and heightens the risk of disruptions unless demand is brought under control”. It says it is “duty bound to protect the bulk supply system” and will curtail supply to over-consuming customers where necessary.
The statement does not say how or when cuts would be made, which municipalities would be first, or for how long. Curtailment normally takes the form of reduced pressure or rotating interruptions in parts of a municipal network, not the loss of a single large account, so businesses in affected metros could see lower pressure or outages without any change in their own usage. Those are the risks to price in, rather than a confirmed plan.
Companies with water-intensive operations, such as food and beverage producers, laundries, car washes, hotels, hospitals and data centres with water-cooled systems, may want to check what storage they hold, how long they can run on it, and whether their municipal accounts show recent outages. Building owners with rooftop or ground tanks and boreholes will be better placed than those on a direct feed. These are practical suggestions, not instructions from Rand Water, which called on municipal customers, residents and businesses to use water responsibly.
What is still unknown
Rand Water has not said whether the record consumption is driven by heat, leaks, unmetered use or population growth, and the statement does not separate real demand from water lost in ageing municipal pipes. IOL separately reports that Tshwane is the first focus of a R500 million, five-year public-private initiative to cut water losses, but that effort is at an early stage and the article gives no savings estimate.
It is also unclear what enforcement powers Rand Water would use against municipalities that are also its largest customers. The statement offers no deadline for compliance and does not name a date for any restrictions. Until it does, the risk to businesses is a warning, not a schedule.
