Yuli Ekowati completed her MSc degree in Water Supply Engineering at IHE Delft in 2011. She became a research fellow in the Department of Environmental Engineering and Water Technology. During that time, she worked in several research topics related to membrane fouling, namely algal organic matter and synthetic polymer, and also in research on biological stability of drinking water. In 2014, she had the opportunity to continue as a PhD candidate in IHE Delft. Her PhD research focused on microbial and chemical contaminants in swimming pool environments and assessment of an alternative disinfection technology for swimming pools. The research was conducted in collaboration with Catalan Water Research Institute (ICRA), Westerdijk Institute and National Institute for Public Health and Environmental Protection (RIVM). She will be awarded with a PhD degree from Utrecht University in March 2019. She is interested in microbiological and chemical quality of water, water treatment technologies, particularly on pre-treatment, disinfection and membrane-based technologies, related to removal of micropollutants, formation of disinfection byproducts, and membrane fouling.

• 1 Introduction2 Application of UVOX Redox® for swimming pool water treatment: microbial inactivation, disinfection byproduct formation and micropollutant removal3 Occurrence of pharmaceuticals and UV filters in swimming pools and spas4 Clinically relevant fungi in water and on surfaces in an indoor swimming pool facility5 Potential transmission pathways of clinically relevant fungi in indoor swimming pool facilities6 General discussion

Yuli Ekowati completed her MSc degree in Water Supply Engineering at IHE Delft in 2011. She became a research fellow in the Department of Environmental Engineering and Water Technology. During that time, she worked in several research topics related to membrane fouling, namely algal organic matter and synthetic polymer, and also in research on biological stability of drinking water. In 2014, she had the opportunity to continue as a PhD candidate in IHE Delft. Her PhD research focused on microbial and chemical contaminants in swimming pool environments and assessment of an alternative disinfection technology for swimming pools. The research was conducted in collaboration with Catalan Water Research Institute (ICRA), Westerdijk Institute and National Institute for Public Health and Environmental Protection (RIVM). She will be awarded with a PhD degree from Utrecht University in March 2019. She is interested in microbiological and chemical quality of water, water treatment technologies, particularly on pre-treatment, disinfection and membrane-based technologies, related to removal of micropollutants, formation of disinfection byproducts, and membrane fouling.

• 1 Introduction2 Application of UVOX Redox® for swimming pool water treatment: microbial inactivation, disinfection byproduct formation and micropollutant removal3 Occurrence of pharmaceuticals and UV filters in swimming pools and spas4 Clinically relevant fungi in water and on surfaces in an indoor swimming pool facility5 Potential transmission pathways of clinically relevant fungi in indoor swimming pool facilities6 General discussion

Yuli Ekowati completed her MSc degree in Water Supply Engineering at IHE Delft in 2011. She became a research fellow in the Department of Environmental Engineering and Water Technology. During that time, she worked in several research topics related to membrane fouling, namely algal organic matter and synthetic polymer, and also in research on biological stability of drinking water. In 2014, she had the opportunity to continue as a PhD candidate in IHE Delft. Her PhD research focused on microbial and chemical contaminants in swimming pool environments and assessment of an alternative disinfection technology for swimming pools. The research was conducted in collaboration with Catalan Water Research Institute (ICRA), Westerdijk Institute and National Institute for Public Health and Environmental Protection (RIVM). She will be awarded with a PhD degree from Utrecht University in March 2019. She is interested in microbiological and chemical quality of water, water treatment technologies, particularly on pre-treatment, disinfection and membrane-based technologies, related to removal of micropollutants, formation of disinfection byproducts, and membrane fouling.

• 1 Introduction2 Application of UVOX Redox® for swimming pool water treatment: microbial inactivation, disinfection byproduct formation and micropollutant removal3 Occurrence of pharmaceuticals and UV filters in swimming pools and spas4 Clinically relevant fungi in water and on surfaces in an indoor swimming pool facility5 Potential transmission pathways of clinically relevant fungi in indoor swimming pool facilities6 General discussion