How long should a 10 foot head water be held during a drainage and vent water test?

Holding a 10-foot head of water for 15 minutes during a drainage and vent water test is important for ensuring the integrity and functionality of the plumbing system. This duration allows ample time to check for leaks, verify that the system holds water without any drops in level, and assesses the effectiveness of the venting system.

A 15-minute hold period has been established based on industry standards, typically to allow all components of the plumbing system to stabilize under the test conditions. This time frame provides sufficient opportunity to identify any potential issues that may not be apparent in a shorter duration. By adhering to this standard, plumbers can ensure that installations are reliable and meet safety and performance expectations.