Our Pick
Posted on @rawstates
Cryptosporidium in the water
March 1993
Lake Michigan waterfront, Milwaukee
Public domain · Wikimedia Commons
A parasite passed through the filtration plant and made an estimated 403,000 people ill, killing at least 69, the largest waterborne disease outbreak in American history. It forced a rewrite of federal drinking water rules.
That was 1 of the hidden places.
Location: approximate area
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