Canwest News Service: Oilsands production is releasing four billion litres of contaminated water into Alberta’s groundwater and natural ecosystems every year, according to a new national report that was immediately dismissed as “false” by the provincial government. The annual volume of water pollution in 2007 would have been enough to fill Toronto’s Rogers Centre, but could be stopped if the federal government started enforcing its Fisheries Act, the report says. “Virtually everyone close to the …