If a building has a non-potable water system installed, what is the minimum size lettering that must be used in warning signs?

In a building with a non-potable water system, proper signage is essential for public safety and awareness. The requirement for minimum lettering size ensures that individuals can easily read important warnings and understand that the water is not safe for drinking or personal use.

The choice of half an inch as the minimum size for lettering is aligned with industry standards that emphasize visibility and legibility. Smaller lettering may not effectively convey the message, especially in situations where the sign needs to be seen from a distance or in less-than-ideal lighting conditions. This precaution helps to prevent accidental ingestion of non-potable water, ultimately protecting public health.

By adhering to this requirement, property owners and managers can fulfill their obligation to inform users of the potential hazards associated with non-potable water systems.