… the EU-Interreg Baltic Sea programme, the Swedish Environmental Protection Agency, and the Swedish Water and Wastewater Association for funding this research. …my supervisors. First, to Stefan, thank you for the honest critique and for always trying to make everything as good as possible, and all the words of wisdom. I carry with me many lessons on the academic life from you. To Annica for being the most engaged person I have ever met, for always being there to discuss small and large matters, and for all the kind words. I carry with me many lessons on life in general from you. To Hamse for taking on supervising me in addition to the other million things you do and for being the champion the water sector needs! To the past supervisors: Hb, Sara, and Marinette. … the Swedish water sector. There is so much drive, companionship, and energy. Thanks to those of you who participated in my research, helped out with sampling, and answered questions. Thanks to those of you that I met at conferences and who asked engaged questions, and to those who I see as my colleagues. …the project partners in FanPLESStic-Sea for giving me new perspectives. A special thanks to Heléne Österlund, I have had fun and learned a lot from working with you. Thanks also to my co-authors at Aalborg University: Kristina