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Sustainable drainage systems are designed to reduce the potential impact of new and existing developments with respect to surface water drainage discharges. Sustainable drainage systems use the techniques of source control, permeable paving, storm water detention, storm water infiltration and evapo-transpiration.

Sustainable drainage systems are the modern way to dispose of surface water. It mimics the natural drainage of the land to store and restrict surface water run-off. This ultimately protects the environment from pollution. The growing population and fluctuating climatic conditions implies that water resources are under tremendous pressure. One way of reducing the mounting water demand and saving money for metered water supplies is to collect and reuse rainwater, a technique known as rainwater harvesting. This technique provides non-potable (non-drinkable) water for activities such as garden irrigation and toilet flushing.

A common misconception of sustainable drainage systems is that they reduce flooding in construction or development sites. In fact it is designed to reduce the impact that surface water drainage system of one site has on other sites. The sustainable drainage system aims to minimize or eliminate discharges from the site, thus reducing the impact. Thus, if all development sites incorporated this technique of sustainable drainage then urban sewer flooding would be less of a problem. Unlike traditional urban storm water drainage systems, it can also help to protect and enhance ground water quality.

The idea behind sustainable drainage is to replicate natural systems that use cost effective solutions with low environmental impact to drain away dirty and surface water. This is to counter the effects of conventional drainage systems that often allow flooding and pollution of the environment. It is also detrimental to wildlife and also results in contamination of groundwater sources and drinking water. The paradigm behind sustainable drainage system should be that of a technique that is easy to manage, requiring little or no energy input, resilient to use, and being environmentally as well as aesthetically attractive. Sustainable drainage aims at preventing environmental pollution thereby maintaining the natural assets of the environment. Sustainable drainage system can be a great tool to control and mitigate extensive and recurrent flood.

Sustainable drainage is an approach that replaces natural drainage systems mostly in development sites. Runoff is collected and stored to allow natural cleaning to occur prior to infiltration or controlled release to watercourses. It is important to understand how these techniques work together to provide sustainable drainage in the most practical, cost-effective and beneficial way.

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Sustainable Drainage Systems :- Marley plumbing & Drainage is leading manufacturer and supplier of above and below ground drainage, hot and cold water supply and ventilation product ranges.