How can Legionella risk in a bypass around a major valve be minimized?

Flushing the bypass regularly is an effective method for minimizing Legionella risk because it helps ensure that stagnant water does not accumulate in the bypass line. Legionella bacteria thrive in warm, stagnant water, so regular flushing encourages water movement and reduces the likelihood of bacterial growth. This practice can also help in maintaining the water temperature at levels that are less conducive to Legionella proliferation, ideally below 20°C (68°F) or above 60°C (140°F).

Additionally, maintaining a regular schedule for flushing can assist in ensuring that residual water does not sit in the bypass long enough for bacteria to develop. Flushing can remove sediments and biofilms that may harbor bacteria, further minimizing the risk of Legionella in the plumbing system. Thus, regular maintenance through flushing is an essential component of effective Legionella risk management in plumbing systems.