The City of Cape Town is making significant progress on its R5.2 billion upgrade to the Potsdam Wastewater Treatment Works in Milnerton, a critical project aimed at doubling the plant’s capacity to meet the demands of the city’s rapidly growing population.
Public Works and Infrastructure Minister Dean Macpherson, who inspected the site alongside African ministers ahead of the Sustainable Infrastructure Development Symposium, praised the project for being both on schedule and within budget.
A Model for Infrastructure Development
The upgrade, entirely funded by the City of Cape Town through resident rates, is the largest wastewater treatment project in South Africa. Once completed in 2027, the facility will increase its capacity from 47 to 100 megaliters per day, incorporating advanced membrane filtration technology to improve water quality.
“This is the kind of progress we want to see nationwide,” said Macpherson. “Cape Town is building for the future, not just the present.” He also highlighted the need for public-private partnerships (PPPs) to fund similar infrastructure projects across the country.
Addressing National Infrastructure Challenges
With South Africa’s recent budget allocating R1 trillion to infrastructure over the next three years, Macpherson emphasized the importance of prioritizing energy, transport, and water projects. However, he noted that even this substantial investment may not be enough to address the country’s infrastructure backlog.
Meanwhile, Cape Town’s MMC for Water and Sanitation, Dr. Zahid Badroodien, explained that the project’s phased funding approach has allowed for additional investments in related water and sanitation programs. He acknowledged residents’ concerns over rising tariffs but stressed that the funds are directly supporting essential services.
Innovations in Water Reuse and Energy
Chris Norman, head of the city’s water treatment works, detailed the plant’s cutting-edge filtration systems, which will produce high-quality treated effluent for industrial and agricultural use, reducing strain on potable water supplies. Future plans include biogas production from sludge, contributing to renewable energy generation.
As Cape Town’s population nears 5 million, the Potsdam upgrade stands as a key example of proactive infrastructure investment—one that other cities may soon look to replicate.
