1 “... many people who have to live without clean water and decent sanitation. Today, 2.2 billion people lack...”

2 “... and sanitation”). The book is a collection of studies from engineering, social and environmental disciplines...”

3 “... availability and sustainable management of water and sanitation”) and Goal 13 (“Take urgent action to combat...”

4 “... management of water and sanitation for all by the year 2030...”