Which of the following is considered a degree of hazard in a water distribution system?

In the context of a water distribution system, the degrees of hazard are classifications that help to determine the potential risk associated with the water supply. A "Severe" degree of hazard indicates the highest level of potential danger to public health and safety. This classification typically applies to situations where contamination can occur due to the possibility of backflow or cross-connections involving pollutants or pathogens that could enter the drinking water supply.

Recognizing severe hazards is essential for ensuring protective measures are in place, such as backflow prevention devices, which safeguard the water supply from any potential contamination. By effectively identifying and addressing severe hazards, plumbing professionals can help maintain the integrity and safety of the water distribution system, protecting both public health and the environment.