Chronic and episodic water shortages are becoming common in many regions of the United States, and urban population growth in water scarce regions further compounds the challenges. In mid-2015, much of California faced an “exceptional drought� within an already moderate to severe drought throughout much of the western United States, but non-arid regions, such as the Southeast, have not been exempt from major water shortages. Increasingly, alternative water sources such as stormwater and graywater are being viewed as resources to supplement scarce water supplies, particularly in urban areas experiencing large population growth.