I've never been great with science stuff. When I was a kid I usually got good grades in everything, but then it was time to dissect a worm and you'd think that I had been hit in the head by a coconut on Gilligan's Island. It wasn't a pretty sight. That's all to offer a giant disclaimer, so when I say the following you take it with a grain of salt: I feel like if you're the Environmental Protection Agency, and you accidentally spill one million gallons of toxic waste into a river and as a result that river turns orange, you probably screwed up pretty badly.
That's exactly what happened in Colorado to the Animas river this week after an EPA screw up. From CNN:
One million gallons is a lot of gallons. Too many gallons. I know because water is usually this color:
But in this case the water is this color:
That's not good. As of now the orange colored river stretches 100 miles long. The Governors of Colorado and New Mexico have both declared states of emergency following the accident.