While you were at client's production facility, you noticed that factory personnel were taking hazardous chemicals and dumping them in a forest area behind the facility. Based on a microbiology class you took in college, you strongly suspect that these chemicals will seep into the groundwater and eventually cause severe neurological damage to those who drink that water. According to your Internet research, these chemical will not necessarily affect everyone who drinks the poisoned water and the adverse effects, although extreme, will not be observable for many years into the future.
What should you do?