Water expert and investor Seth Siegel is an author, lawyer, activist and a serial entrepreneur. Siegel is the author of the award-winning New York Times bestseller Let There Be Water: Israel’s Solution for a Water-Starved World. His second book, Troubled Water: What’s Wrong with What We Drink, presented an ambitious agenda for a fundamental rethinking of America’s drinking water system. Mike Consol, senior editor of Real Assets Adviser, interviewed Siegel for a recent podcast. The following is an excerpt of that conversation.

By 2050, it is estimated that two-thirds of the world’s population will be living in water-stressed areas. There are numerous ways to address this challenge, such as improving water efficiency, reducing water pollution and investing in new water technologies — a particular