Argument: Keystone XL taps water-wasting tar sands
- Debate: Keystone XL US-Canada oil pipeline - con argument.
"Keystone XL Pipeline." Friends of the Earth: "Water waste: During the tar sands oil extraction process, vast amounts of water are needed to separate the extracted product, bitumen, from sand, silt, and clay. It takes three barrels of water to extract each single barrel of oil. At this rate, tar sands operations use roughly 400 million gallons of water a day. Ninety percent of this polluted water is dumped into large human-made pools, known as tailing ponds, after it’s used. These ponds are home to toxic sludge, full of harmful substances like cyanide and ammonia, which has worked its way into neighboring clean water supplies."