What is the primary purpose of the Uniform Plumbing Code (UPC)?

The primary purpose of the Uniform Plumbing Code (UPC) is to protect public health and safety. This code establishes minimum standards for plumbing systems to ensure that they are safe and function effectively. By setting guidelines for installation, maintenance, and design of plumbing systems, the UPC helps prevent issues such as water contamination, sewage backflow, and other hazards that could impact human health and the environment.

The other choices, while related to various aspects of the plumbing industry, do not capture the core intent of the UPC. Regulating prices of plumbing materials does not fall under the UPC’s jurisdiction; rather, it focuses on safety standards. Similarly, while environmental considerations are important, the UPC's main aim is not to enforce environmental laws but to ensure that plumbing systems do not compromise public health. Lastly, while standardizing plumbing fixtures can be seen as a benefit of adhering to the UPC, it is not the primary objective; the foremost goal remains the protection of public health and safety through safe plumbing practices.