Water is one of our most precious resources, and also one of the most threatened. We are facing a growing water crisis, with many regions in South Africa and around the world experiencing water scarcity and pollution.

In late 2017, Cape Town nearly became the first major city in the world to run out of water, when dam levels were dangerously low, hovering between 15 and 30 percent of the total dam capacity. Restrictions were put in place to save water, limiting...