What is a benefit of installing a wet venting system?

The benefit of installing a wet venting system lies in its ability to allow multiple fixtures to share the same vent line effectively. This system utilizes a single pipe to serve both as a drain for wastewater and as a vent for air, which helps to equalize the pressure within the plumbing system. By allowing multiple fixtures to be interconnected in this manner, wet venting can minimize the number of pipes needed for a plumbing installation, optimizing space and resources. This approach is particularly advantageous in situations where space is limited or where it is necessary to simplify the layout of plumbing systems.

The other options do not accurately reflect the primary benefits of wet venting. While a wet venting system may contribute to cost savings, the main focus is on the efficient use of the vent line for multiple fixtures. Additionally, wet venting does not provide water supply; rather, it is concerned with drainage and venting. Lastly, wet venting does not eliminate the need for drainage, as it still requires a proper drainage strategy; the term refers to the dual function of the venting system as both a drain and a vent.