Greenovation+ Professionals New Technology

The Benefits of Rainwater Harvesting

With the ATS Spec System, users can now specify BRAE Rainwater Harvesting (RWH) Systems on the US and Canadian websites.

Why Choose Rainwater Harvesting?

With evolving LEED standards, and the general shift to green construction, incorporating RWH is a beneficial solution to assist with long-term sustainability. Below is a list of benefits to using RWH[1].

– Rainwater is free.

– Lessens the demand on the municipal water supply.

– Saves money on utility bills.

– Provides effective stormwater runoff management by diminishing flooding, erosion and reducing the flow to stormwater drains.

– Stored water can be used for flushing toilets, urinals, car washing, cooling tower water make-up and landscaping

– Beneficial for irrigation, and plants thrive because stored rainwater is pH neutral and free from pollutants as well as salts, minerals, and other natural and manmade contaminants.

– Harvested rainwater can meet most non-potable water demands, which comprises of about 89% of all water use in a typical office building.

How does RWH Systems Work?

Water or rainwater, that would have otherwise gone down the sanitary system or into the ground, is collected in a catchment area (typically a roof) and directed through rainwater leeders to various forms of filtration. This removes sediment and debris while oxygenating the rainwater. The rainwater then travels into a storage tank through a calming inlet, which prevents the agitation of bio-film that has settled at the bottom of the storage tank[2].

Additional levels of sediment filtration and ultra-violet light (to eliminate bacteria) results in high-quality reclaimed water, which can then be used for water for livestock, irrigation, flushing toilets, vehicle wash and laundry, and also to replenish ground water levels. By implementing RWH systems into your next green building design, you will not only help protect our world’s water, but it can help you achieve potential LEED credits[3].

For more information on Brae’s Rainwater Harvesting Systems, please visit



[1] Volume 1, 2009. Rainwater Harvesting Technology. Retrieved July 4, 2014,  from

[2] Volume 1, 2009. Rainwater Harvesting Technology. Retrieved July 4, 2014,  from

[3] Volume 1, 2009. Rainwater Harvesting Technology. Retrieved July 4, 2014,  from