A probabilistic expert system for predicting the risk of Legionella in evaporative installations

► The bacterium Legionella usually lives in water sources such as cooling towers. ► We discuss a probabilistic expert system for predicting the risk of Legionella. ► The expert system has a master-slave architecture. ► The inference engine is implemented through Bayesian reasoning. ► Bayesian networks model and connect relationships for chemical and physical variables.