January 2015 news reported that 50,000 gallons of oil spilled from the Poplar pipeline about 5 miles upstream from Eastern Montana causing a warning to its residents to not drink or cook with their tap water.
Authorities detected benzene, a cancer-causing component of oil in public water supplies downstream of a Yellowstone River pipeline spill.
Elevated levels of benzene were found in water samples from a treatment plant that serves about 6,000 people in the agricultural community of Glendive, near North Dakota. One resident said she smelt something similar to diesel fuel coming from her tap water. State and U.S. Environmental Protection Agency Representatives said preliminary monitoring of the city’s water showed no cause for concern.