What is a standard requirement for water from drinking fountains?

Water from drinking fountains must be properly regulated to ensure that it meets health and safety standards. Proper regulation includes monitoring the water quality for contaminants, maintaining the equipment in good condition, and ensuring that the water is potable, which means it is safe for human consumption. This regulation is crucial to prevent any health risks associated with drinking water that is not clean or safe.

In contrast, sparkling, ice-cold, or mineral water are not requirements for drinking fountains. While some individuals may prefer water at a specific temperature or with certain characteristics, the primary concern is the safety and quality of the water provided, rather than its physical properties or enhancements.