Images showing polluted water with a green substance drifting ashore around Mouille Point and the Clifton area have been making the rounds on social media.
Some listeners suggested that it could be anti-freeze poured in the ocean by naughty children.
CapeTalk's John Maytham speaks to Gregg Oelofse, Manager Environmental Strategy and partnership Branch City of Cape Town, about what this green substance in the water could be.
According to Oelofse, his office got a call, to which they responded quickly, going to the scene to do an assessment.
Our view was similar in that we felt and believed it to be anti-freeze. We have taken samples and they are currently being tested.— Gregg Oelofse, Manager Environmental Strategy and partnership Branch City of Cape Town
Oelofse says that this is not the first occurrence of this nature around the Sea Point and Mouille Point area.
Just last week we had a red coloured liquid also coming out of the storm water system. So we trying to target the area to address the issue of people using the storm water system to dispose of waste— Gregg Oelofse, Manager Environmental Strategy and partnership Branch City of Cape Town
He urged people not to dispose of waste in the storm water system, because it ends up in the ocean and that could hurt marine life.
The city awaits test results to confirm what could be polluting the water.
Listen to the full conversation below: