The 2024 International Plumbing Code (IPC) is the industry's authoritative resource for modern plumbing design, safety, and compliance. Published by the International Code Council (ICC), this fully revised edition reflects critical updates that meet the evolving needs of residential and commercial plumbing systems. This codebook introduces key innovations, such as mandatory tracer wire for plastic sewer lines, new vacuum testing options for DWV systems, and updated flow rates to promote water conservation. It also reinforces pipe support standards in expansive soil conditions and integrates current accessibility requirements for inclusive design.