Patrick Smeets is a senior scientific researcher in microbiological water quality and health with over 20 years of experience in the drinking water sector. He specialises in quantitative microbiological risk analysis and applies that within the Dutch and international drinking water sector. More recently, he also applied this in other sectors such as water recreation, irrigation and the soft drink industry. He coordinates the Dutch drinking water companies’ joint research programme on hygiene and safety. At Utrecht University, he teaches the course Drinking water and Sanitation for the Master’s degree in Water Science Management at the Geosciences Faculty. He worked and works to improve the legally required quantitative risk analysis of the Dutch water companies. An important part of that is determining the effectivity of purification processes to remove pathogenic micro-organisms. In a European context, he worked on various research projects such as MicroRisk (Quantitative Microbial Risk Assessment, QMRA), PREPARED (climate change risks, water cycle safety plans), TRUST (risk management in the urban water cycle) and Water4India (improving safety of water supply in rural India).