Belgrave sewer spill

Investigation into the leak is underway. (Supplied)

A sewer spill with an unknown cause is currently being investigated and managed with work crews on site in waterways around Belgrave.

South-East Water posted to social media Monday 8 July that there was a a sewer spill between Monbulk Road and Clematis Bushland Reserve, Belgrave with overflow into creeks in the Sherbrooke, Clematis and Monbulk area.

“We’re currently investigating the cause of the spill” said the post on Facebook.

The company said that crews are on site and working to manage the spill.

“We’re sorry for the mess and any potential smells.” the post read.

“We’ll continue working to reduce any impacts on the environment – that will include daily water quality testing.”

South-East water also said that as a precaution, that residents and their animals should not use or handle the water in the Sherbrooke, Clematis and Monbulk Creek.

Advisory signs will be put in place until they receive water quality results for the area and the company has said that they have also let the Environment Protection Authority Victoria and Yarra Ranges Council know about the spill.