The International Association of Plumbing and Mechanical Officials has been protecting the public’s health and safety for ninety three years by working in concert with government and industry to implement comprehensive plumbing and mechanical systems around the world.

As a membership-based association, IAPMO is proud to utilize an open consensus process in the development of our flagship Uniform Plumbing Code® and Uniform Mechanical Code®. These codes are established through scientific research, debate, and analysis, strengthening our position at the forefront of the plumbing and mechanical industries.

The IAPMO Group is a complete service organization, providing code development assistance, industry-leading education, plumbing and mechanical product testing and certification, building product evaluation and a manufacturer-preferred quality assurance program. Each component of the IAPMO Group works toward playing an integral part in protecting the health of people everywhere.



Responding to a request, we are making some of the online Answers and Analysis offered only to IAPMO members available here.

This week's question:
A replacement water heater in a residence was installed inside a utility room, located approximately 12 to 15 feet from the building exterior. The building construction is a conventional raised floor with a crawl space. The water heater is installed in a pan. The temperature and pressure relief valve terminates into the pan which is drained into the crawl space. The Code states that the pan shall drain to an approved location. Can the pan drain into the crawl space, as opposed to being piped to the building exterior?