Water and sanitation, collectively referred to as Water, Sanitation, and Hygiene (WASH), constitute the foundation of public health systems and national resilience. Reliable access to safe water and effective sanitation is essential not only for disease prevention, but also for economic productivity, human dignity, and long‑term state capacity. In fragile and water‑scarce environments such as Somaliland, WASH must be treated as a strategic public health and governance priority rather than a purely humanitarian concern.

Defining Water and Sanitation

Water supply refers to the provision of safe, accessible, and reliable water for drinking, food preparation, hygiene, and domestic use. Safely managed water originates from an improved source—such as piped systems, boreholes, or protected wells—that is available on premises when needed and is free from fecal and priority chemical contamination.

Sanitation encompasses the infrastructure and services required for the safe management of human excreta from containment to final disposal or reuse. Its central objective is to prevent human waste from contaminating people, water sources, and the environment. Effective sanitation systems include toilets, latrines, sewer networks, wastewater treatment, and sludge management.

Public Health Impacts of WASH

The link between WASH and health outcomes is direct and well established. Where water and sanitation systems are inadequate, the environment becomes a primary vector for disease transmission.

Improved WASH reduces the spread of fecal‑oral diseases such as cholera, typhoid fever, dysentery, hepatitis A, and intestinal parasitic infections. Diarrheal disease remains among the leading causes of mortality for children under five globally, and evidence consistently........

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