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The term "water reuse" is generally used interchangeably with terms such as wastewater reuse, water reclamation, and water recycling. A definition by the USEPA states: "Water reuse is the method of recycling treated wastewater for beneficial purposes, such as agricultural and landscape irrigation, industrial processes, toilet flushing, and groundwater replenishing (EPA, 2004)."
Rainwater harvesting (RWH) is the process of collecting and storing rainwater rather than letting it run off. Rainwater harvesting systems are increasingly becoming an integral part of the sustainable rainwater management "toolkit" [5] and are widely used in homes, home-scale projects, schools and hospitals for a variety of purposes including watering gardens, livestock, [6] irrigation, home ...
In some cases, the water would be routed to a conventional drinking water treatment plant before it is piped to households. In others it could go directly to the tap. The cost is high.
The facility would produce 190,000 cubic metres of drinking water per day, enough to supply about 100,000 homes. [174] As of June 2012, the cost for the desalinated water had risen to $2,329 per acre-foot. [175] Each $1,000 per acre-foot works out to $3.06 for 1,000 gallons, or $0.81 per cubic meter. [176]
Many people in many countries keep clean containers so they can boil it and drink it, which is useful to supply water to the needy. [8] Harvested and filtered rain water can be used for toilets, home gardening, lawn irrigation, and small scale agriculture. [8] Another strategy in water conservation is protecting groundwater resources.
Raw water includes rainwater, ground water, water from infiltration wells, and water from bodies like lakes and rivers. Raw water is generally unsafe for human consumption due to the presence of contaminants. A major health problem in some developing countries is use of raw water for drinking and cooking. [1]