In the face of growing freshwater scarcity, most countries of the world are taking steps to conserve their water and foster its sustainable use. Water crises range from concerns of drinking water availability and/or quality, the degradation or contamination of freshwater, and the allocation of water to different users. To meet the challenge, many countries are undergoing systemic changes to the use of freshwater and the provision of water services, thereby leading to greater commercialization of the resource as well as a restructuring of the legal, regulatory, technical and institutional...