Kirribilli’s Milson Park bay water turns neon green

It’s one of Sydney’s most prized waterfront views, but on Wednesday Kirribilli residents were shocked to find their beloved harbour had turned neon green.

Firefighters were called to the bay at Milson Park around 3pm on Wednesday after locals spotted the fluorescent green water flowing from a storm drain into the harbour.

Fire and Rescue NSW began testing the water with fears a toxic substance had been released into the water; however, all tests have so far come back with no indications of toxicity.

“Because it is such an old, heavily populated area it’s probably impossible to find where it started – there are probably thousands of points like homes and stormwater drains which lead into the harbour,” superintendent Adam Dewberry said.

“The mind boggles.”

Firefighters have ruled out nearby construction sites as the cause of the pollution. There’s no odour, and no signs of corrosiveness.

One line of inquiry is if a local prankster is to blame, potentially a year 12 muck-up day prank.

A local described the scene to Nine News as “green cordial, like radioactive stuff you see in superhero movies”.