Is GREY water separate from sewage?

Grey water (or greywater, sullage, also spelled gray water in the United States) refers to domestic wastewater generated in households or office buildings from streams without fecal contamination, i.e., all streams except for the wastewater from toilets.

How do you separate GREY water?

If you have no suitable distribution system, installing a gravel pit for the grey water is an easy, low-maintenance way to deal with grey water. Even better, use wood chips. They add organic matter to the soil, and they don’t collect scum that you end up having to dig up and clean.

Can you discharge GREY water on the ground?

U.S. Forestry Service. Officially, it’s illegal to dump gray water on the ground. Many boondockers, however, have reported that they were given permission by forest rangers to dump their gray water on the ground.

Are GREY water systems worth it?

A study commissioned by the city of Santa Rosa, CA, reported that a “laundry-to-landscape” greywater system would save 15 gallons of water per person, per day. Recycling greywater from bathroom sinks and showers saves an additional 25 gallons of water per person; some systems can save 50,000 gallons a year.

Is washing machine water considered GREY water?

Gray water in California is defined as water from showers and baths, washing machines, and bathroom sinks. Black water in California is defined as water from kitchen and toilet sinks.

Is kitchen sink water considered GREY water?

Gray water in California is defined as water from showers and baths, washing machines, and bathroom sinks. Black water in California is defined as water from kitchen and toilet sinks. There is variation among states. But every state considers toilets black water.

Can I drain my washing machine water into the garden?

Household wastewater from washing machines, bathroom sinks, showers, and bathtubs is considered “gray” because it is only lightly soiled and poses a minimal health risk. As long as you’re only putting biodegradable products down the drain, graywater is perfectly safe for irrigating plants.

Is it good to separate gray water from septic system?

Separating Gray Water from the Septic Sending soapy water from the washing machine, sink or shower into the sewer is not the best use of this increasingly precious resource, especially in drought-prone states like California, Arizona and Texas. If your house has a septic system, you have two more good reasons to recycle gray water.

How does a greywater system work in a washing machine?

Low-tech systems do not store greywater or treat it in any way. The most basic set-ups route water from a washing machine to the outdoors using a one-inch irrigation line. Laundry-to-landscape systems have a valve switch that allows water to either be sent outside or to the sewer, but do not require any plumbing alterations.

How to design a grey water water system?

Here are some of the key steps to consider for your grey water system design: Locate all your main drain points and plan how you will tap into each; Determine where you’re going to drain your system to; Check that your drains are at least 5 feet higher than your destination; Mark where you are going to bury your drain lines with spray paint

Is the greywater system separate from the potable water system?

The greywater system should be totally separate from any potable water system. For more complex systems that supplement greywater with either rainwater or municipal water, the system requires cross connection protection of an air gap or other approved device (for example, and RP).

How does greywater work in the kitchen sink?

Kitchen Greywater: Water Conservation Straight from the Sink. Reusing water that we already have is a simple and common sense idea, and greywater systems do just that. If regulations in your state allow it, recycling water from the kitchen sink for irrigation can cut down on water waste and save your landscape in times of drought.

How is grey water separated from black water in septic system?

Sometimes grey water and black water are separated in a home’s plumbing. For example, in some homes the waste water from the sinks, shower, and washing machine is ran through a drain and expelled outside of the home, while the waste from the toilet, dishwasher, etc. is ran through a separate drain and into a septic system.

The greywater system should be totally separate from any potable water system. For more complex systems that supplement greywater with either rainwater or municipal water, the system requires cross connection protection of an air gap or other approved device (for example, and RP).

Can a greywater system be used for irrigation?

Reusing water that we already have is a simple and common sense idea, and greywater systems do just that. If regulations in your state allow it, recycling water from the kitchen sink for irrigation can cut down on water waste and save your landscape in times of drought. Photo © Michael Dorman, excerpted from Greywater, Green Landscape