Oil, chemical companies sue to overturn Canada plastics ban

Plastics companies on Tuesday went to court to seek to effectively overturn Canada’s new single-use plastics ban, arguing that their products have been wrongly labelled as toxic.

The companies bringing the case -- Dow Chemical Canada, Imperial Oil and Nova Chemicals, backed by Alberta and Saskatchewan provinces -- were expected to argue that Ottawa failed to provide scientific evidence to justify the regulations.

They will also try to convince the court that the federal government overstepped its jurisdiction in regulating waste management.

Environment Minister Steven Guilbeault in a Twitter message accused big multinationals of “trying to stop our ban on harmful single-use plastics.”

“We’re going to stick to the science and fight for a healthy environment where our shorelines, parks, and waterways are free of harmful plastic pollution,” he vowed.

The phased-in ban on the import, manufacture and sale of plastic items such as store bags, straws, cutlery and beverage ring carriers was introduced last year as part of Ottawa’s commitment to zero plastic waste by 2030.

It relied on a recent scientific assessment that found plastic pollutes waterways and oceans and can linger in the environment for hundreds of years, harming wildlife and people -- with microplastic fragments now found everywhere.