Broad Street pump

The Broad Street pump was a water supply source in 1854 London, famously associated with the cholera outbreak. At that time, the city’s drinking water was often contaminated with sewage. When a cholera epidemic spread, John Snow, a physician, investigated and discovered that most affected individuals drank water from this pump. By analyzing the pattern, he identified the contaminated pump as a key source of the disease transmission. His work helped establish the importance of clean water and sanitation in preventing illnesses, marking a major step forward in public health and epidemiology.