The City of Regina is suing a refinery after oil allegedly spilled into the city’s wastewater treatment plant in 2019 and 2020.

In a statement of claim, the City is seeking over 4.5-million dollars in damages from Consumers’ Co-operatives Refineries Limited after a thick tar-like substance contaminated the city’s wastewater.

The City is now looking to recoup the costs it took to clean up the lagoon.

The suit follows an incident in May 2020 when the refinery allegedly triggered a discharge of oil-laden wastewater directly into the city’s sewer system. The suit also claims that the refinery had several smaller discharges before that event.