Kiama Municipal Council has voted to stand with councils around Australia to oppose Norwegian oil giant Equinor's plans to drill in the Great Australian Bight.
At their November 19 council meeting, councilors were unanimous in their agreement that the risk of a spill - up to 7.9 million barrels - was too great.
Modelling for a worst-case scenario indicates oil from such a spill could reach as far north as Port Macquarie.
"Under such a scenario, Kiama's coastline of beaches, rock platforms and estuaries would be impacted with potentially dire [results]," the motion read.
The council also noted the potential impact of a spill on the local tourism industry.
The council will write to state and federal MPs to inform them of its position. It will also write to all coastal councils in NSW and urge them to oppose drilling in the Bight.