What is the definition of an "illegal connection" in plumbing?

An "illegal connection" in plumbing refers to a connection that violates plumbing codes. Plumbing codes are established to ensure the safety, health, and welfare of the public by regulating the design, installation, and maintenance of plumbing systems. These codes dictate the standards for materials, installation techniques, and the overall integrity of plumbing systems.

When a connection does not adhere to these codes, it can lead to numerous issues such as leaks, contamination of the drinking water supply, and increased risk of system failures. Illegal connections might arise from unauthorized modifications, unpermitted work, or the use of inappropriate materials. Ensuring compliance with plumbing codes is crucial to maintain safe and effective plumbing infrastructure, making this understanding fundamental for anyone working in the plumbing field.