Water sustainability might not be among the flashiest crises our planet faces, but it's certainly one of the most important. Put simply: All 8 billion humans on this planet need water. And as worldwide water shortages grow, so too does interest in water investing – that is, in companies that help treat, distribute and dispense water.
"Water is at the core of sustainable development and is critical for socioeconomic development, healthy ecosystems and for human survival itself," the United Nations says. It is also a finite and irreplaceable resource that can only be renewed if well-managed.
