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محیط زیست و منابع طبیعی::
سیلاب
RwH reduces dependence on mains water that may benefit the individual householder if water use is metered, benefits the environment as less water is abstracted from lakes, rivers and groundwater, and stores excess stormwater, thus attenuating the storm peak in order to reduce flooding and, hence, reduces the pressure on the already overloaded storm sewer system (Charlesworth, 2010).
The EA (2011) state that RwH systems can be used as part of an overall SUDS approach and can reduce stormwater runoff in the short term, particularly in the early stages of a storm.
Kellagher and Maneiro Franco (2007) modelled domestic RwH and found that, by increasing the size of the tank to between 1.5 and 2.5 times that normally used to harvest water for standard uses in the home, considerable benefits would accrue from the point of view of reducing stormwater volumes and attenuating peak flows.
(2007) concluded that stormwater harvesting, when designed into a treatment train, offered the potential to control flooding due to excess surface water.
To address concerns associated with population growth and the worst drought in living memory, the approach of Total Water Cycle Management (Water by Design, 2010) integrates water quality and stormwater management (Khouri, 2006) to promote more sustainable water resource usage (van der Sterren et al.
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