The Saskatchewan city of North Battleford has shut down its water intake plant because of a major pipeline oil spill.
City spokesman Stewart Schafer says an oil slick has been detected downstream from the city on the North Saskatchewan River.
Husky Energy has said between 200,000 and 250,000 litres of crude oil and other material leaked into the river on Thursday near Maidstone, Sask.
Schafer says the city has a three-day supply of water in its reservoirs and water tower.
It also has a ground-water treatment plant.
Husky is trying to contain the spill using booms across the river, about 40 kilometres upstream from North Battleford.