About Us

Swiss Toilet Organisation is an association founded in 2014 with the mission of improving the sanitation culture in Switzerland. Our main focus consists on bringing the concept of Sustainable Sanitation closer to the public and contributing to spread the use of sustainable sanitation technologies in Switzerland and around the world. Therefore, awareness-raising is a substantial part of the work of STO, targeting young people in particular. 

Swiss Toilet Organisation is a member of the cewas-community.


Karla Schlie is founder of the STO. She holds a MAS MSD Master in Sustainable Development from the University of Basel.

Since 2017 she is Coordinator of  the Swiss Junior Water Prize, an joint initiative of the Swiss Toilet Organisation and the Swiss Water Partnership