A Government that looks virtually powerless to enforce a cleanup of mass contamination at Tiwai Point is now considering law changes.
The Environment Ministry is not sure it can hold the smelter company liable to clean up once it shuts in 2024, with toxic waste threats not dealt with.
The Environment Minister David Parker says he's asked officials for advice on ways to hold companies to account either through reforming resource management regulations or separate law changes.
Gary Taylor is chief executive of the Environmental Defence Society.
He spoke to Susie Ferguson.