Stormwater is rainwater that has not been collected and stored for future use, infiltrated or managed at the source. Rainwater, when not stored for future use or infiltrated on site, will flow into storm drains picking up toxins on the way and eventually will end up in our waterways.

The EPA has identified “stormwater as the greatest source of water pollution”.

With proper filtration and disinfection, the practice of rainwater collection for landscaping, toilet flushing, laundry, commercial and industrial use, along with potable use for single family residences, can minimize storm water runoff. The use of swales and rain gardens to lessen the effects of storm water from urban sprawl are helping reduce the effects of stormwater runoff.

According to the EPA “rainwater harvesting systems are recognized as a Low Impact Development (LID) technique for stormwater management.” As a result, many states, counties and cities have adopted and encourage rainwater collection. The EPA recognizes that the “effectiveness of a rainwater harvesting system for managing stormwater runoff depends on the presence of a consistent and reliable demand that can draw down the cisterns and ensure adequate volume for storm water retention.” A system that is sized properly by taking daily rainfall amounts into account, rather than yearly averages – and design that includes a full range of use during those peak events, or enough storage to minimize overflow, are going to be the most effective. 

Whether commercial or residential, rainwater collection, when sized properly and used regularly on a scale that lessens the overflow amount from the cistern, has the most positive effect on stormwater management.

To read more from the EPA on rainwater collection and stormwater see http://water.epa.gov/polwaste/nps/upload/rainharvesting.pdf 

Ken Blair

President at RainBank Rainwater Systems

A rainwater collection systems designer and consultant, Ken has designed and installed residential and commercial systems, primarily in the northwest United States for more than 10 years and, in 2014, began consulting and managing builds in other states. Ken is an accredited ARCSA Professional Designer / Installer and Life Member, the Northwest Regional ARCSA representative and advisor to its education committee and is available to speak about Rainwater Collection Systems design and builds.

Ken is a United States Navy veteran, having served on active duty during the Vietnam War era.

A career entrepreneur, Ken created a new business focus with a commercial dive company in Hawaii in the mid 1980′s to respond to and clean up oil spills, oil spill equipment training, service and maintenance for the oil co-op service industry. Ken is passionate about having a positive impact on the environment and is also a founding director of BANK-ON-RAIN (2011-2014), whose mission is to create grassroots solutions for rainwater collection for consumption and agriculture in developing areas of the planet.