Rhode Island Journeyman Plumber Practice Exam

How can improper plumbing ventilation affect building safety?

1. It can increase property values

2. It can lead to stagnant water

3. It can cause sewer gas accumulation

4. It can decrease energy efficiency

The correct answer is: It can cause sewer gas accumulation

Improper plumbing ventilation can indeed cause sewer gas accumulation, which poses significant health and safety risks to building occupants. Ventilation systems in plumbing are designed to allow sewer gases to escape safely into the atmosphere. When ventilation is inadequate or improperly installed, gases from the sewer system, such as methane or hydrogen sulfide, can seep into the living spaces. This not only creates unpleasant odors but also presents serious health hazards, including respiratory issues or even poisoning in extreme cases. Therefore, ensuring proper plumbing ventilation is crucial for maintaining a safe living environment. The other options address different issues that might arise in a building, but they do not capture the primary concern regarding health risks associated with sewer gas when ventilation is compromised. For instance, while stagnant water may occur in plumbing systems, it is primarily a result of drainage issues rather than ventilation failure. Likewise, property values and energy efficiency, although important factors in building management, are not direct consequences of improper plumbing ventilation.