Radioactive lead contaminated thick sludge.
State Ignored warnings for 20 years 
Private companies and “out of state families” were running the district? That’s crazy. There were reports saying New York was buying up water rights in Colorado. Prepare to see more of this if no one does anything about that.
I found a YouTube link in your post. Here are links to the same video on alternative frontends that protect your privacy:
If you live in CO and find this disturbing, you should do some research on what’s sitting underneath the Rocky Mountain Arsenal in Commerce City.
Also, fun fact, there are thousands of corpses underneath Cheesman Park in Denver due to it previously being a mass grave for people who died of TB. They’ve been dead awhile though so it’s probably not causing any issues.
