42nd Federal Immission Control Act
In future, evaporative cooling plants, cooling towers and wet scrubbers will be monitored better

Wherever warm water is stored, legionella are lurking - be it in water pipes, air-conditioning systems or swimming pools. It only takes a few of those bacteria to cause a serious bout of pneumonia. The Robert Koch institute estimates the number of new cases in Germany at approximately 6,000 to 10,000 per year. CAPNETZ’ (competence network for Community-Acquired Pneumonia) projections go even further, stating 15,000 to 30,000 cases annually of pneumonia not acquired in hospitals, meaning that 4 % of pneumonia cases in Germany, that were not acquired in hospitals, are caused by legionella infections. The mortality rate is estimated at up to 10%, so we have to assume around 3,000 fatalities per year. This is almost the same as the number of road fatalities per year in Germany.