Legionella control is about getting 100% safe drinking water for your patients (hospitals), guests (hotels) or other type of clients (theme parks and swimming pools). There are a number of proven techniques for legionella prevention. Making the right choice, you will need to take a good look at the different issues. Maintenance, efficacy, costs (investment and returning) and possible side effects. Whatever legionella technique is used, the only way to proof a safe and legionella free location is to execute a wateranalyses program.