Now that the harbour at Laurel Point has been cleaned up, now they need to do the same near the Point Ellice Bridge.
Peter Ross, executive director of the Coastal Ocean Research Institute, said he was surprised that the high contaminant levels in Victoria's waters were not a single type of contaminant, such as PCBs or mercury or hydrocarbons.
"It was basically everything," Ross told On the Island host Gregor Craigie.
High concentrations of more than a dozen chemicals were found in the Victoria harbour, including lead, mercury and PCBs. The highest levels were found near the Point Ellice Bridge, more commonly known as the Bay Street bridge.