Which term refers to regulations and amendments adopted by an administrative authority in plumbing?

The term that accurately refers to regulations and amendments adopted by an administrative authority in plumbing is "Code." In the context of plumbing, a code is a comprehensive set of legal standards that govern construction practices, materials, and installation methodologies for plumbing systems. These codes are established to ensure public health, safety, and environmental protection.

The development of plumbing codes typically involves a collaborative process among various stakeholders, including government agencies, industry professionals, and public interest groups. By adhering to plumbing codes, professionals in the industry can ensure that their work meets the required safety and performance standards, thereby preventing potential hazards related to plumbing installations.

Standards, while related, usually refer to established criteria set by recognized organizations that provide specifications for materials or performance but may not always have the binding regulatory authority that a code possesses. Guidelines tend to suggest best practices rather than enforceable mandates, whereas protocols are often more about procedural instructions rather than regulatory frameworks. Therefore, "Code" is the term that most accurately encapsulates the nature of regulatory authority in plumbing.