Green liquid flowing into Gunnamatta Bay. Picture supplied
Visitors to Gunnamatta Bay on Wednesday morning were alarmed to see green-coloured liquid flowing into the waterway from a stormwater pipe.
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Sutherland Shire Council investigated, and staff believe the colour was likely to have been caused by "a harmless dye" being used by a plumber working on a drainage problem nearby.
One resident sent photos of the "green ooze" to the Leader.
Green liquid flowing into Gunnamatta Bay. Picture supplied
"Sutherland Shire Council is aware of a coloured substance detected in the water at Gunnamatta Bay," a spokeswoman said.
"Investigation by the council's environmental health team has revealed the substance is likely to be a harmless dye commonly used by plumbers and Sydney Water to detect leaks or trace pipe locations, as a maintenance worker of a nearby unit complex was found to be using a fluorescein dye to trace and resolve a drainage issue.
Green liquid flowing into Gunnamatta Bay. Picture supplied
"The dye will naturally dissipate with stormwater flows and tidal movements."
The Environment Protection Authority has also been contacted for comment.
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