Water conservation refers to reducing the usage of water and recycling of waste water for different purposes such as cleaning, manufacturing, and agricultural irrigation.
Water conservation and water efficiency
 Water conservation
Water conservation can be defined as:
Any beneficial deduction in water loss, use, or waste
A reduction in water use accomplished by implementation of water conservation or water efficiency measures; or, 3.
Improved water management practices that reduce or enhance the beneficial use of water. A water conservation measure is an action, behavioral change, device, technology, or improved design or process implemented to reduce water loss, waste, or use. Water efficiency is a tool of water conservation. That results in more efficient water use and thus reduces water demand. The value and cost-effectiveness of a water efficiency measure must be evaluated in relation to its effects on the use and cost of other natural resources (e.g. energy or chemicals).  Water efficiency
Main article: Water efficiency
Water efficiency can be defined as the accomplishment of a function, task, process, or result with the minimal amount of water feasible, or an indicator of the relationships between the amount of water needed for a specific purpose and the amount of water used, occupied or delivered.  Goals
The goals of water conservation efforts include:
Sustainability. To ensure availability for future generations, the withdrawal of fresh water from an ecosystem should not exceed its natural replacement rate. •
Energy conservation. Water pumping, delivery, and waste water treatment facilities consume a significant amount of energy. In some regions of the world (for example, California ) over 15% of total electricity consumption is devoted to water management. •
Habitat conservation. Minimizing human water use helps to preserve fresh water habitats for local wildlife and migrating waterfowl, as well as...
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