Support staff Executive secretary Petra Jorritsma Lab Patricia van den Bos LAB Technician - Sanitary Engineering Jane Erkemeij LAB Technician - Sanitary Engineering Armand Middeldorp LAB Technician - Sanitary Engineering Judith Jahn LAB Technician - Sanitary Engineering Education support Sabrina Kestens Online Education - Sanitary Engineering Marissa Zegel Education support - Water Resources Secretaries Fleur van de Water Water Resources Betty Rothfusz Water Resources Mariska van der Zee Sanitary Engineering Share this page: Facebook Linkedin Twitter Email WhatsApp Share this page