Dangerous levels of toxic PFAS are contaminating water supplies in areas around at least 12 military bases, new Department of Defense testing has revealed, drawing concern from public health advocates that the DoD is not doing enough to protect the public.

The data released this week by the military shows levels for five kinds of PFAS compounds at what Scott Faber, vice-president of government affairs for Environmental Working Group, characterized as “extremely high” levels, and he said they present a health threat to residents living nearby.