It is statistically impossible for a community to survive repeated incidences of uncontrollable vomiting and miscarriages, let alone the litany of other ailments, long enough to report on them.
Has common sense left the building?
Not only that, but not all people have the same amount of intake of such poisons. Just because you live in the same community does not mean that you drink from the exact same well with the exact same contaminants(or level of) or that you drink the exact same amount from such given well. Better to be a Pepsi hallolic or even an Alchololic in such cases.