In all modesty, we need no introduction in this field. Along with the Fundación Barceló, Dr. Crespí published the first handbook on prevention and control of legionellosis within the tourism industry; currently in its third edition and a benchmark within the industry. We are leaders in the provision of prevention courses and seminars and perform thousands of legionella analysis each year according to the experience gained after taking part in many legionellosis outbreaks worldwide. We perform Legionella Risk Assessments in facilities (hotels, hospitals, industries, cruises, etc) and collaborate with the Legionella infection research. We elaborate Water Security and Prevention Plans for all types of facilities. We have a worldwide coverage and act with urgency in the event of outbreaks. Although it is impossible to one-hundred percent guarantee specific results, the low infection rates in our premises and the low recurrence rates in previous outbreaks are incomparable. Water cooling towers are a specialization in themselves. Lastly, we have Register Books specially designed to comply with the law and prove good practice.