On 7th October we visited the Faculty of Science of Novi Sad, early in the morning we learned about water as a limited resource. Also, we learned new and innovative water plant treatments that can be applied in many countries. It is always good to learn new things and have the opportunity to share our thoughts. We thank professor Djurdja Kerkez for her input so we can be informed and share new information with our colleagues in order to arrive to more people.