Cape Town’s Zandvlei estuary closed due to high E. coli levels, with the City of Cape Town halting all recreational water activities in the area opposite the Imperial Yacht Club.
The temporary closure follows consecutive water samples that showed E. coli levels exceeding 4 000 CFU/100ml. This surpasses the threshold for intermediate contact recreation, raising concerns for public health and safety (Daily Maverick).
According to the City, inflows from the Sand River Canal appear to be a major contributor to the contamination.
Investigations are ongoing. Officials say the estuary will reopen only when water quality returns to acceptable levels.
The closure pinpoints the environmental stress Zandvlei faces, especially during winter, when rain flushes pollutants into the system. Stakeholders say this is part of a wider issue affecting Cape Town’s water bodies.
Zandvlei is the only functioning estuary in False Bay. It stretches from the Constantia mountains to Muizenberg’s Blue Flag beach. The compromised water quality has raised concerns about the health of local surfers and bathers where estuary water enters the ocean.
Businesses along Muizenberg Beach, reliant on tourism and water activities, may also be hit hard if the contamination persists.
Jennifer Louw, chairperson of the Catchment Forum, says Zandvlei’s condition reflects the state of the entire catchment. Pollutants trapped in sediment are largely from stormwater runoff across roads, roofs and paved areas.
She says the vision is to improve the estuary’s ecological grade from level D to level B. This would require a strong Catchment Management Plan, backed by enforcement.
Louw said, ‘We must aim high. Only this way can we achieve improvements.’
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Zandvlei waterbody open again following water quality concerns
Picture: Areal Chris
