Routine chlorination of a municipal water supply begins in the United States

node

Continuous chlorination of a public drinking water supply is introduced at Jersey City, New Jersey, and spreads rapidly through American cities over the following two decades. Together with sand filtration this is the technology to which Cutler and Miller later attribute roughly half of the urban mortality decline of the period.

A node is not a place. Drawing it on a map would assert something about the world that no stored fact supports.