Colorado flooding has not only overwhelmed roads and homes, but also the oil and gas infrastructure stationed in one of the most densely drilled areas in the U.S. Although oil companies have shut down much of their operations in Weld County due to flooding, nearby locals say an unknown amount of chemicals has leaked out and possibly contaminated waters, mixing fracking fluids and oil along with sewage, gasoline, and agriculture pesticides.

More: Colorado Floodwaters Cover Fracking and Oil Projects: ‘We Have No Idea What Those Wells Are Leaking’

Another example of why fracking is a dangerous practice.