This course will familiarize students with the complex infrastructure used to meet human demands, namely the wastewater existing treatments and future uses, in resource perspective – Water; This course aims also to provide students with tools to meet UN Sustainable Development Goal 6 (ODS 6) – Clean Water and Sanitation. It will be discussed the recent approaches to water, energy and other resources recovery from wastewater streams; competing uses and demands; trends and forecasting; costs; regulatory; risk analysis. This course will also include a quantitative overview of wastewater contaminants and their engineering control, monitoring and removal existing technologies. Ecological engineering approaches for treating contaminated water using natural processes to improve water quality. Emphasis on combining basic science and engineering approaches to understand the fundamental processes that govern the effectiveness of complex natural treatment systems.