During a water test, the trench is not backfilled and is filled with water to a minimum depth of 18 inches above the pipe. What is this procedure called?

• A. Water Test (Infiltration)
• B. Procedure for Water Test
• C. Air Pressure Test
• D. Alignment Testing

Answer: (B)

The setup describes how to perform the test. Leaving the trench open (not backfilled) and filling water to at least 18 inches above the pipe establishes the hydrostatic pressure needed to check for leaks during the test. This is about the method used to carry out a water test, so the label that fits is the Procedure for Water Test. The other options describe what the test aims to assess (infiltration), a different testing method (air pressure), or a separate check (alignment), which don’t match the described setup.