The Denver-Delta region has long been plagued by the Dakota Access Pipeline’s toxic wastewater spill.

The water contamination has caused the deaths of at least one Native American and hundreds of other people.

Now, a new study suggests that another pipeline, the Keystone XL, is even more likely to cause environmental harm than the Dakota.

The study is a first step toward a federal rule that would require more stringent environmental testing before building new pipelines.

The Keystone XL is expected to be built by the end of the decade and will carry crude oil from the Canadian tar sands to refineries in Texas.

The U.S. Environmental Protection Agency has proposed rules to regulate Keystone XL.

The Colorado River Basin is home to about 1.3 million people, the majority of whom live in the Rocky Mountains.

A pipeline is proposed to cross the Colorado River from the Dakotas to the Gulf Coast.

Source The Lad English translation is from The Lad, by Michael A. Strain, copyright 2017 by Michael Strain.

Used by permission.