Potable Water Reuse : Opportunities and Challenges

International Water Association Potable Water Reuse

Target Audience

Water Practitioners, Water resources managers, researchers and all those interested on how to implement successfully water reuse alternatives.

Previous Knowledge on the basics of Water Reuse is desired but not necessary.


With advancement of treatment technology and monitoring, potable reuse has become a reality for numerous communities, serving as a key sustainable piece of the water supply portfolio.

This webinar will provide case studies of potable water reuse from around the globe, including reflection on the challenges and successes.

Key projects and research will be shared – starting with the pioneer, Windhoek Namibia, who started augmenting their supply with DPR in 1968. Then, San Diego has a 1MGD DPR Demo, and is looking to augment up to 25% of their supply in 2030 with potable reuse.

For those who aim to know more, we recommend the following resources

1. A recent article from IWA’s The Source Magazine, where Peter Joo Hee Ng (CEO of PUB, the Singapore’s national water agency) explains how Potable Water Reuse plays a vital role on Singapore’s water security strategy.

2. WERF Reuse 101 webpage, a valuable collection of videos and resources for education and outreach on water reuse.

3. The WERF Direct Potable Water Reuse Initiative , which illustrates the effort currently made in California.

Learning Objectives

a. Participants will understand the history and potential for potable reuse.

b. Participants will understand the opportunity for potable reuse to help augment a community’s water supply in a safe and practical manner.

c. Through the three case studies, participants will learn the potential challenges that may arise including technical, operational, regulatory, and public opposition – and how to address them


Prof. Dr. Ing Jörg E. Drewes . Chair of Urban Water Systems Engineering at the Technische Universität München