Elevated chemicals found in water near reactor
The second paragraph finally gets down to specifics:
Ameren Missouri has told the federal Nuclear Regulatory Commission that water samples from a new groundwater monitoring well at its Callaway plant show levels of radioactive tritium and Cobalt-60 higher than those found in drinking water.
While it may be technically true that cobalt and tritium are chemicals, it is less specific than it could be. For example, if you were told that the soil beneath your house had an abnormal amount of metal in it, you would be less concerned than if you were told that the metal is plutonium. Yes, in a narrow sense, plutonium is a metal, in much the same way that KFVS is technically a news organization.
Radioactive Tritium, Cobalt 60 Found in Monitoring Well Near Callaway Nuclear Reactor
The KMOX headline is specific, not only in terms of what was found but where it was found.