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This makes it harder for any bacteria to remain, and ensures the system is safer than it would otherwise be. The most obvious way to do this is to flush the pipes through periodically.
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While this scenario is not ideal, if it cannot be avoided you should consider how you can make the dead leg less dangerous if it needs to be retained within the water system. What if the water pipe is used only occasionally and cannot therefore be removed? Why you should always start with a legionella risk assessment.If you are unsure about removing dead legs safely and to ensure they are done properly, you can hire an expert familiar in dealing with such pipework. … as a rule of thumb the maximum size of a dead pipe or dead leg should be no longer than 1.5 x its widthĪs a rule of thumb, and according to guidelines, the maximum size of a dead pipe or dead leg should be no longer than 1.5 x its width. This can in-turn lead to Legionnaires’ disease and Pontiac fever, a less harmful yet still problematic condition stemming from legionella bacterial contamination. DIY legionella test – no prior experience, simple, easy to use with results in 25 minutes.This in turn leads to a greater chance for bacteria to multiply in that water, including the Legionella bacterium. If you know a length of pipework forming part of your hot or cold water distribution system is never used, or has become isolated then steps should be taken to remove it entirely, rather than simply capping it off.Ĭapping it will simply lead to stagnant water collecting inside the pipe. Is removing dead legs from your water pipes a good idea? Learn more about Legionnaires’ disease here.This contamination can lead to problems within the rest of the water system and should be avoided. In such instances, this lack of use can lead to water stagnation and increase the risk that the water inside the pipe becomes contaminated with potentially dangerous bacteria, including legionella. The term can also refer to a run of pipework that is only used very occasionally. The term dead leg, or dead end is typically used to describe a run of pipework that is no longer in use or a pipe that has become isolated from the regular flow of water. Removing Dead Legs from Hot & Cold Water Pipes to Prevent Legionellaĭead legs may sound like something you get after sitting for too long, but when they are found in water systems they can present a significant risk to people as they encourage the stagnation of water and the growth of potentially dangerous bacteria such as legionella.