How far must a latrine be from a water supply?

Maintaining a proper distance between latrines and water supplies is crucial for health and safety, particularly in preventing contamination of drinking water sources. The standard distance of 100 yards is established to reduce the risk of pathogens and pollutants from latrines entering the water supply. This distance helps ensure that any potential waste runoff does not reach the water source, thereby protecting public health.

The other distances listed may not be adequate to prevent such contamination, making them less desirable according to established sanitation guidelines. The choice of 100 yards has been recognized in various health regulations and military hygiene practices to safeguard both personnel and the surrounding environment.