They’re a familiar scene dotting the city skyline — sleekly conical yet distinctly old-world — but just how much do you know about how water towers work, why we still use them and exactly how safe the tanks where we store our drinking water really are? The municipal water mains of New York City provide enough pressure to lift water roughly six stories up in the air. As turn-of-the-century buildings grew taller and taller, so did the demand for water at higher elevations.
