What set of regulations specifies minimum acceptable standards for plumbing installations?

The Building Code is the correct answer because it establishes the legal framework and minimum standards for construction, including plumbing installations. These codes are developed at various governmental levels, often reflecting safety, health, and accessibility concerns. They provide specifications on the materials, methods, and overall design of plumbing systems to ensure they function safely and efficiently. Building Codes not only help in maintaining the integrity of plumbing systems but also protect the public from potential hazards associated with inadequate plumbing.

Other options may involve guidelines or safety measures related to plumbing, but they do not serve the comprehensive legal and technical structure that the Building Code provides. Safety Codes, for example, focus on the safety aspects but may not encompass all installation standards. Installation Guidelines may offer recommendations for best practices, yet they lack the enforceable nature of regulatory codes. Plumbing Regulations might exist as more localized rules, but they would still generally fall under the auspices of the broader Building Code to ensure consistency and legal enforcement across various regions.