Oct 062012
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Grey Water System.

The bathroom is the largest consumer of indoor water. The toilet alone can use 27 percent of potable household water.

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Grey Water System

Almost every activity or daily routine that happens in the home bathroom uses a large quantity of water. For example, a bathroom sink faucet generally runs at 2 gallons of water per minute, all of which goes down the drain.  One person is responsible for wasting approximately 2400 gallons down the sink drain every year. This water can be used to flush the toilet and thereby save potable water from being flushed.

A Grey Water System is designed to catch the water flowing down your sink drain, filter it, disinfect it, and store it in a holding tank, ready for the next toilet flush.

Gravity and a small electric pump transport the water from a holding tank installed under the sink. A device in the toilet tank prevents fresh water inflow as long as sufficient water is available in the holding tank to do the job. In case the tank runs low, the normal toilet valve for incoming water will serve the demand.

Water discharge to the sewer is reduced by 25 – 40%. The system has a lifespan of 10-12 years, with a payback of about 4 years, depending on local water and sewage costs.

If used by every household, a Grey Water System could represent a savings of 4.8 billion gallons of water flushed down U.S. toilets each day, according to the U.S. Environmental Protection Agency’s Office of Water.

Will a Grey Water System work for your home and save water?

Whether it will or not depends on the location of your sink(s) in relation to the toilet(s), the number of occupants, the type of toilet(s), and many other factors.

This is where we can help. In conjunction with the principles of the EPA Water Sense Program, we follow the LEED for HOMES Whole House Approach, which not only considers one stand-alone Green Home Improvement, but also its relationship to all the other elements that impact the water consumption  aspects of your home.

Please contact us for assistance.