December 2023 – 12:30

Systems Update
Johannesburg Water has observed a high demand across the system, which has affected the bulk supply. Rand Water reservoirs remain low, although they are pumping normally.

Sandton systems
The Sandton system remains under pressure, with most reservoirs being at low levels. The Illovo reservoir is critically low, while the tower is empty. Residents in this supply zone have poor pressure to no water and water tankers have been deployed to the affected areas. As a mitigation strategy, Johannesburg Water has closed the outlet of the reservoir to build capacity. The Morningside, Linbro Park, Bryanston, and Marlboro reservoirs are currently low but supplying normally. High-lying areas in the Bryanston supply zone may experience low pressure to no water. Alternative water supply through water tanker services is ongoing. Johannesburg Water is monitoring the situation.

Soweto Systems
The Soweto systems remained stable during the day under the heatwave conditions but will be affected by overnight throttling (reducing pressure and flow). The bulk supply from Rand Water is also currently restricted as a water demand management strategy. The Zondi reservoir supply is currently at 60%, while the Power Park reservoir supply is at 50%. Areas fed by the Zondi, Doornkop and Power Park reservoirs are affected by low pressure, while high-lying areas are affected by no water. Bramfischerville is supplying at 50%, and poor pressure to no water is expected most parts of the area. Customers in phases 7 and 9 currently have no water supply. Alternative water supply is being provided to affected areas.

Midrand Systems
Most Midrand systems are currently stable; however, the Rabie Ridge reservoir is experiencing high demand and water levels are currently low levels. The reservoir is currently supplying at 30% while the tower remains on bypass mode. Poor pressure to no water can be expected in parts of the supply zone including Klipfonteinview. As a mitigation strategy, Midrand reservoirs will be throttled overnight to build capacity for tomorrow.

Alexander Park reservoir
There were some overnight improvements at the reservoir, however, due to high demand, the levels have dropped and are currently low. The outlet was closed overnight to build capacity and was reopened this morning. However, customers in this supply zone will have poor pressure to no water supply, particularly in high-lying areas. Alternative water supply will be provided to affected areas.
Crown Gardens reservoir
The reservoir is currently stable but experiencing high demand, which is placing strain on the incoming supply. Johannesburg Water will continue to throttle the reservoir outlet overnight to build capacity for tomorrow.
Eagles Nest reservoir
The reservoir is critically low due to increasing demand and poor supply pressure. Poor pressure is expected in high-lying areas; however, system has been reconfigured to boost the supply. Johannesburg Water is also monitoring the impact on the Alan Manor and Naturena reservoirs (which are supplied by the Eagles Nest reservoir).
South Hills tower
The tower is critically low due to poor supply pressure and there is currently one pump operating. Poor pressure to no water is expected in the supply zone, especially in high-lying areas. Johannesburg Water will monitor the system closely throughout the day.
Linden 1 reservoir and tower
The reservoir level remains low but is supplying normally. While the outlet is fully opened, poor pressure can be expected in high-lying areas of the supply zone. The tower improved overnight, and supply is normally, however the levels are low due to high demand and poor supply. Johannesburg Water will monitor the situation.
Commando System
• Brixton reservoir: The reservoir improved overnight and is supplying normally.
• Brixton tower: The tower is stable and is supplying normally.
• Hursthill 1 and 2 reservoirs: Both reservoirs are critically low and poor pressure to no water is expected in the supply zones. However, the outlets to both reservoirs are fully opened. Hursthill 1 reservoir has been configured to boost supply, while Hursthill 2 reservoir outlet will be closed overnight to build capacity for tomorrow.
• Crosby reservoir: The reservoir is critically low, however the outlets are fully open and supplying normally, while the outlets are fully opened. Poor pressure to no water is expected in the supply zone.