Courtesy of Intellihot
Rooftop water tanks are a familiar part of the New York City skyline, persisting through generations of the city’s rapid growth. Yet despite their nostalgic affect and somehow endearing states of relative decay, their decrepit outward appearances may belie their water’s quality. In 2014, it was found that many of these weathered containers had actually built up layers of grime and that some even contained E. coli. In 2019, the city finally passed legislation mandating annual inspection reports for all drinking water tanks, though these changes are still nascent.