According to sanitation guidelines, how are drinking fountains to be regulated?

Drinking fountains must be regulated by proper regulation of water flow to ensure not only the availability of drinking water but also its safety and cleanliness. Adequate water flow helps maintain hygiene by preventing stagnation, which can lead to the growth of bacteria and other contaminants. Ensuring a consistent and appropriate flow rate allows for easy use while minimizing the chances of splashing or spills, which can contribute to unsanitary conditions.

Proper regulation also includes ensuring that the water is at a suitable temperature and pressure, thus enhancing user experience and maintaining compliance with health codes. Monitoring and maintaining these parameters are crucial for preventing any potential health risks associated with contaminated or improperly maintained drinking water sources.

Other methods mentioned, such as user demand or visual inspection, may not provide a reliable or systematic approach to ensuring water quality, while automatic timers would not effectively address the need for constant regulation based on real-time usage and safety.