In order to meet the needs of existing and future populations and ensure that habitats and ecosystems are protected, the nation's water must be sustainable and renewable. Sound water resource management, which emphasizes careful, efficient use of water, is essential in order to achieve these objectives. Efficient water use can have major environmental, public health, and economic benefits by helping to improve water quality, maintain aquatic ecosystems, and protect drinking water resources. As we face increasing risks to ecosystems and their biological integrity, the inextricable link between water quality and water quantity becomes more important.
Water efficiency is one way of addressing water quality and quantity goals.
The efficient use of water can also prevent pollution by reducing wastewater flows, recycling industrial process water, reclaiming wastewater, and using less energy. EPA's Office of Water strongly encourages all sectors, including municipal, industrial, and agricultural, to achieve efficient water use. EPA recognizes that regional, state, and local differences exist regarding water quality, quantity, and usage. Differences in climate, geography, state institutions, and laws favor a prudent approach in which water efficiency programs are tailored for specific locales.