What is dead leg piping?

Dead leg piping refers to sections of pipes in a plumbing or water system where water cannot flow effectively, leading to stagnation. This occurs when there is a length of pipe that does not connect to any outlet or service point, which can create situations where water sits unused. Stagnant water in dead legs can become a breeding ground for bacteria and other contaminants, making it a health concern, especially in healthcare settings where water quality is paramount.

By contrast, pipes that allow constant water flow or those with a constant draw-off are actively in use and do not suffer from the issues associated with stagnation. Pipes that contain only air would not typically fit the definition of a dead leg, as dead legs specifically pertain to sections of piping filled with stagnant water rather than air. Therefore, recognizing the definition of dead leg piping is crucial for maintaining safe and effective plumbing systems, particularly in environments that demand high standards for water quality.