Something in the water

-Are you sure we're doing the right thing?

Two truck drivers were staring at the containers of toxic waste, floating in the water where they had just dropped them.

-The boss told us to get rid of this shit, and that's exactly what we're doing?

-But what if someone got in contact with this?

-Do you see how much water there is here? Even if there's a breach in one of these containers, it's gonna be so diluted that even someone who drinks straight from the river won't feel anything.

-Do you know how dangerous this is? On some people with allergies, or sensitivity to this stuff, even one drop can...

-You worry too much. Anyway, we got rid of the dangerous experiments that could have gotten us in jail for a long long time. Let's go home now, I'll buy you a beer.

A moment later, the truck was gone. Meanwhile, the river, now contaminated by the chemicals, were heading to the city, and its unsuspecting inhabitants.