Cape Town is keeping a vigilant eye on the Atlantic after a mechanical failure at the Green Point maritime outfall led to the release of untreated sewage. The incident, triggered by a breakdown in the city’s pumping infrastructure, occurred last Wednesday, raising concerns over water quality in the area.

Zahid Badroodien, Cape Town’s mayoral committee member for water and sanitation, disclosed that the malfunction left just one operational pump at the facility, forcing the discharge. Efforts to address the crisis were swift, with a second pump now repaired and operational. However, the city remains on high alert as officials race to secure an additional backup pump to prevent further disruptions.

Water samples are being tested to gauge the environmental impact, and signage will be installed to inform the public of potential health risks. In accordance with South Africa’s environmental regulations, the Department of Forestry, Fisheries, and the Environment has been notified, and a Section 30 notice has been filed under the National Environmental Management Act.

This regulatory mechanism compels the city to manage the incident and assess any environmental fallout—a process that will likely draw scrutiny in the weeks ahead.

Cape Town’s sewage infrastructure has been under review, and new treatment plants have been planned to manage effluent from its marine outfalls at Hout Bay, Green Point, and Camps Bay. Proposed sites include sports fields near the Green Point station, a location adjacent to the Camps Bay facility, and a plot near the Hout Bay outfall, between Main Road and the Hout Bay River.

In a series of public meetings last year, residents expressed their views on the sewage disposal practices. A scoping study, commissioned by the City, outlined the construction of treatment plants, with an estimated cost of R6 billion, excluding annual inflation in building expenses.

Complaints about the Green Point outflow are a problem that stretches back to 1888, and have periodically been the cause of a great deal of friction between local residents and City councils.

Marine outfalls, the City explained, are designed to release screened effluent far offshore, where it is diluted by ocean currents and broken down by natural biological processes. However, with pressure from conservation activists and local surfers and swimmers affected by the ouflow, the City has reluctantly come to the table. Threats of legal action from competing political parties such as Action SA have added to the impetus.

Cape Town's three marine outfalls discharge effluent beyond the intertidal zone, while 95% of the city’s wastewater is processed by 23 land-based sewage plants. Mayoral committee member for water and sanitation, Zahid Badroodien, acknowledged that while plans remain in the early stages, the City is committed to balancing environmental, spatial, and budgetary considerations.

Meanwhile, upgrades worth over R2.5 billion are underway at six sewage plants, including Athlone and Bellville, with an additional R140 million allocated for marine outfall improvements. A research study by the University of the Western Cape highlighted emerging contaminants in the marine environment, raising concerns about chemical pollutants.

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