Actually greywater systems can be incredibly simple.
Gray water system roof.
The typical rv sanitation system is made up of a black water holding tank for solid waste and at least one gray water holding tank for liquid waste.
The run off coefficient of a pitched tiled roof is 0 75 but a flat roof is 0 5 or less becuase more is lost to evaporation.
Annual collection in litres roof area in square metres x annual rainfall in mm x system efficiency x run off coefficient of roof.
Tanks as small as about 75 gallons and at least 42 inches tall are adequate for a greywater system since the object is to keep fresh graywater passing through daily.
Residential home sewage system septic and greywater leach fields roof gutter runoff driveway and yard drainage are common applications for drywells.
For simple systems meeting the following conditions a completed gray water standard plan issued by ladbs see attachment 1 is acceptable.
Greywater flows to a holding tank and then is pumped through a sand filter to drip irrigation lines.
In an average year with 12 inches of rain in los angeles that small roof could collect 7 200 gallons.
A water catchment system for roof rainwater is simple and can store water for outdoor irrigation.
For example the roof a 1 000 square foot house can collect around 600 gallons per one inch of rain.
If the area to be irrigated is uphill from the building providing greywater a pumped system can be used to pump water to a holding tank and then out to the landscape.
No pumps no machinery and virtually no maintenance.
A greywater system is used to take water that has already been used from places like your laundry shower and sink and divert it to use in another purpose like watering gardens or landscaping instead of flushing it down into the sewer.
Take the laundry to landscape system for example.
Greywater is different from blackwater aka sewage because while it may have some residuals like dirt hair grease etc from it s first use they aren t toxic to the environment and the water can be reused in some.
Choose a tank that is rated for dry burial meaning it can be buried without water inside and not risk collapsing from weight of soil atop and around.
In fact greywater action suggests keeping greywater systems as simple as possible.
You also need to check that your roof is clean.
We have chosen the beaver for our logo and mascot because of the beaver s pivotal role in watershed management dam building sediment and water retention.
The rainwater catchment system.
One of the most intricate system types is sand filter to drip irrigation.
Our mission is to design and install innovative and affordable systems for catching water from rainwater capture in cisterns to green roofs and greywater recycling for san diego county residents businesses and institutions.
A set of plans and specifications showing the gray water system.
What is a greywater system used for.
Without altering household plumbing one bit this gravity based system redirects water from the washing machine into a basic yard irrigation system.
