19th centuryReputable sourceWell documented
Cholera and the Age of Sanitation
On the timeline · around 19th century · The Rise of Medicine
What happened
As industrial cities swelled with crowded, filthy slums, cholera — a bacterial disease spread through water and food contaminated with human waste — erupted in a series of deadly pandemics that circled the globe from the 1810s onward. It could kill a healthy person within hours through catastrophic dehydration.
Why it matters
Tracing cholera to dirty water spurred the great sanitary reforms of the 19th century — clean water supplies and sewers — which remain the single most effective defence against the disease and a foundation of modern public health.
Sources
- World Health Organization. Cholera (Fact Sheet) · Reputable source