Medicine
Water Sanitation and Hygiene (WASH) Programs in Refugee Camps
Quick fact
In refugee camps, diarrhea can be the leading cause of death among children, and well-designed WASH programs can reduce diarrheal disease rates by nearly 40%—simply by ensuring safe water, latrines, and handwashing.
Why this is interesting
When thousands of people are forced into a crowded camp, the most immediate danger isn't violence—it's diarrhea. How do aid workers stop a disease outbreak before it starts?
Read the full explanation
Understanding Water Sanitation and Hygiene (WASH) Programs in Refugee Camps
Think of a refugee camp as a new, dense city built overnight. Without sewers, taps, or garbage collection, human waste and dirty water mix with food and drinking water. Bacteria like cholera thrive in this environment. WASH programs are the essential infrastructure: they drill wells or pipe in water, build latrines that isolate excreta, and organize garbage disposal. They also train 'hygiene promoters' who teach residents why and how to wash hands, store water safely, and use latrines. This three-part approach—water, sanitation, and hygiene—breaks the cycle of fecal-oral transmission that spreads diseases like cholera and typhoid.
A deeper explanation
The core principle is interrupting the fecal-oral route of disease transmission. When a person infected with a pathogen defecates, the pathogen can enter water or food through contaminated hands, flies, or flooding. WASH blocks this at multiple points: safe water storage prevents contamination after collection; latrines contain waste before it enters the environment; handwashing with soap removes pathogens from hands before they touch food or faces. Humanitarian standards, such as the SPHERE Project, set minimum benchmarks: 15 liters of water per person per day, one latrine per 20 people, and no more than 100 meters from any shelter to a water point. These targets are based on evidence showing that meeting them drastically lowers disease incidence. But WASH also faces challenges: groundwater can be depleted by overpumping, latrines may flood during rains, and cultural norms must be respected to ensure use. Thus, planning must include community participation and long-term sustainability, not just initial construction.