JAMA | May 17, 2016Read the Publication
n 1854, British physician John Snow famously wrote, “The most terrible outbreak of cholera which ever occurred in this kingdom, is probably that which took place in Broad Street, Golden Square, and the adjoining streets, a few weeks ago.” (http://bit.ly/1TUQnje). Snow linked cholera to polluted water flowing from the Broad Street pump. City officials removed the pump handle and the cholera epidemic suddenly ended. Cholera is one of many gastrointestinal illnesses caused by drinking water carrying disease-causing microbes. In 2000, for example, hundreds of Milwaukee residents became ill when they drank city water contaminated with cryptosporidium (http://bit.ly/1OPvioB).