The building end of a PVC potable water service pipe must terminate at which point?

The termination point of a PVC potable water service pipe is significant for ensuring proper access, functionality, and compliance with plumbing codes. The correct answer indicates that the pipe should terminate at both the first full open ball valve and a distance of 5 feet inside the building.

This is important because the first full open ball valve serves as an essential isolation point for the water supply system. It allows for easy maintenance and repairs without needing to shut off the water supply to the entire building. Furthermore, the requirement for the termination to be at least 5 feet inside the building helps to protect the pipe from potential damage due to external elements, provides additional security, and ensures that any leaks are contained within the building's envelope, minimizing water waste and damage.

By having both of these criteria, the plumbing system is designed for safety and convenience in maintenance, which is especially critical in a potable water system where the integrity and access to water are paramount. This dual-compliance approach enhances the overall effectiveness of the water supply system within the building.