During its operation, sludge was disposed of in unlined lagoons, and wastes were burned in open pits, leading to groundwater contamination. The site was placed on the NPL in 1983, and cleanup ...

In 2022, Maine became the first state to ban it after PFAS contaminated crops and water on over 50 farms where sludge had been ... nitrogen and copper could be dissolved out.

The Gold King Mine spill leaked copper, lead, cadmium, iron, and other metals, and the 230 mines are leaking their own mixtures of the metallic sludge into rivers all over Colorado. The Denver ...