09/02/2016 13:56 EDT | Updated 09/03/2017 01:12 EDT

Saskatchewan city lifts all watering restrictions following oil spill

NORTH BATTLEFORD, Sask. — Officials in a Saskatchewan city affected by an oil spill say all watering restrictions have been lifted.

But North Battleford residents are still being asked to use water in moderation and follow an alternating schedule for watering their lawns.

A Husky pipeline leak detected July 21 spilled up to 250,000 litres of oil mixed with a lighter hydrocarbon into the North Saskatchewan River near Maidstone.

The cities of North Battleford, Prince Albert and Melfort had to shut off their water plant intakes and find alternate sources of water when the oil plume moved downstream.

Prince Albert and Melfort already lifted their water restrictions.

The province's Water Security Agency said earlier this week that cities affected by the spill may be able to reopen their water intakes before winter.