If you pay attention to the sustainability space, you probably hear the term "water stewardship" a lot. The importance of stewardship has been growing as the general public and large corporations alike realize the urgency of solving global water crises such as scarcity, flooding and poor quality. According to the UN, more than two billion people live in countries experiencing high water stress. More than half of the global population could face water shortages by 2050, with alarming security, economic and humanitarian implications.