From the Swiss Blue Community Eawag – Aquatic Research Institute:
Recycling water and nutrients? Yes, says the expert.
When there is a prolonged dry spell and local authorities call on residents to save water, questions immediately arise as to whether it would make sense to reuse more water and collect rainwater. In light of recent events, here are some answers from Prof. Kai Udert, Head of the Process Engineering Department at Eawag.