Master Plumber Practice Exam 2026 - Free Plumber Practice Questions and Study Guide

The installation of drinking fountains typically indicates the need for an indirect waste system. Indirect waste systems are designed to prevent potential contamination from waste water that could backflow into clean water supplies. Drinking fountains, being fixtures that provide potable water, require a waste system that minimizes the risk of cross-contamination.

When a drinking fountain is installed, it often involves the use of an indirect waste connection, such as a floor sink that does not directly connect the fountain's drain to the sanitary sewer system. Instead, it allows for the drainage of water while ensuring that any waste water does not pose a risk to the integrity of the drinking water source. This is crucial in maintaining health and safety standards in public and commercial buildings.

The other options represent different plumbing concepts that do not specifically relate to the installation of drinking fountains. Steel pipes generally refer to a material choice for piping rather than a specific waste disposal method. Yoke venting relates to venting systems designed to allow gases to escape from the plumbing system but do not pertain directly to waste handling for drinking fountains. Bell traps are a type of trap used for collecting sediment but do not specifically address the concerns of cross-contamination with drinking water systems. Thus, the use of indirect wastes reflects the necessary