Legionellen und Wasserüberwachung auf Kreuzfahrtschiffen

Legionella is a dangerous and hard-to-kill pathogen that is better to mitigate before it gets a foothold. That makes consistent monitoring of stored water an imperative. Operators can’t treat what they don’t know. Yet maintaining consistency can be difficult. Most monitoring processes are either highly-manual (swabs and grab samples) or are maintenance-heavy and temperamental (DPD membrane and reagent side-stream sensors). DPD and old-tech amperometric analyzers require consistent flows with no bumps in pressure or vibrations. That makes them ill-suited for cruise-ship use with unavoidable issues such as periodic fresh-water fill-ups, long at-dock periods that can lead to Legionella-friendly temperatures in the hot water systems, as well as the periodic system flushes needed to avoid water stagnation.