Thousands of oil and gas industry wastewater spills in North Dakota have caused “widespread” contamination from radioactive materials, heavy metals and corrosive salts, putting the health of people and wildlife at risk, researchers from Duke University concluded in a newly released peer-reviewed study.
Some rivers and streams in North Dakota now carry levels of radioactive and toxic materials higher than federal drinking water standards as a result of wastewater spills, the scientists found after testing near spills. Many cities and towns draw their drinking water from rivers and streams, though federal law generally requires drinking water to be treated before it reaches peoples' homes, and the scientists did not test tap water as part of their research.
High levels of lead — the same heavy metal that infamously contaminated water in Flint, Michigan — as well as the radioactive element radium, were discovered near spill sites. One substance, selenium, was found in the state's waters at levels as high as 35 times the federal thresholds set to protect fish, mussels, and other wildlife, including those that people eat.