Master Plumber Practice Exam

Soil and drain pipes located above food-handling establishments shall be subjected to a standing water test of not less than how many feet?

1. 12

2. 25

3. 10

4. 15

The correct answer is: 10

The standing water test is a crucial procedure used to assess the integrity of soil and drain pipes in specific environments, such as food-handling establishments. In such cases, the pipes must be tested to ensure they do not leak, as leaks can pose serious health risks by contaminating food or creating unsanitary conditions. The requirement of a standing water test of not less than 10 feet is based on industry standards that account for potential impacts on food safety and plumbing integrity. This test ensures that the pipes can adequately handle expected loads and pressures without failing, subsequently protecting both public health and the facilities' operations. The other options reflect tests that exceed the minimum requirements and may not align with standard plumbing codes specified for food-handling environments. It's important to adhere strictly to the recognized practices to maintain compliance and ensure safety in plumbing installations above areas where food is prepared or stored.