Water, Sanitation, and Hygiene (WASH) are interconnected public health interventions that are essential for preventing disease and maintaining health. Here's a full description:

1.     Water: Safe drinking water is crucial for health, affecting both hydration and disease prevention. It's vital that water sources are safe, reliable, and accessible.

2.     Sanitation: Proper sanitation facilities and services are necessary to dispose of human waste and maintain a clean environment. This includes toilets, sewers, and waste treatment plants.

3.     Hygiene: Good hygiene practices, such as handwashing with soap, are critical for preventing the spread of infectious diseases.

WASH programs aim to provide communities with access to clean water, adequate sanitation, and education on hygiene practices. These programs are particularly important in developing countries where access to these basic services is often limited. Improving WASH services can lead to better health outcomes, increased productivity, and reduced poverty.