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	Greywater - Wikipedia, the free encyclopedia
		Greywater, sometimes also spelt as graywater, grey water or gray water and also known as 'sullage', is wastewater generated from processes such as washing dishes, laundry and bathing.
		Despite this, greywater is often reused for irrigation, illegally or not, in drought zones or areas hit by hose pipe bans, typically by manual bucketting.
		Greywater recycling for toilet flushing is generally not economical at a residential scale.
	en.wikipedia.org /wiki/Greywater (739 words)

	Sustainable Earth Technologies - Greywater Treatment
		Greywater can be defined as any domestic wastewater produced, excluding sewage.
		The main difference between greywater and sewage (or flwater) is the organic loading.
		The main advantage with these types of systems is that they treat the greywater naturally, and also enhance the local environment because of the attractive plants used and the fauna attracted to them.
	www.sustainable.com.au /greywater.html (574 words)

	treatment
		This filter is suitable for public facilities where the principal source of greywater is hand-washing and showers without any food waste to speak of.
		It should be noted that greywater is warmer than combined sewage and that, therefore, shallow leach zones in operation tend to stay free of ice much longer than is normally expected of combined waste waters.
		-When relatively warm greywater is injected into the soil, increased biological activity as well as a warming of the soil tend to keep the injection zone unfrozen longer than surrounding areas.
	www.greywater.com /treatment.htm (1586 words)

	Greywater Recycling & Irrigation Systems by ECO Design
		The quality of the greywater is the same as it was when it left the bathroom, laundry or kitchen where we were already in contact with it.
		The remaining faecal and organic matter is composted in the greywater outlet housings in the garden irrigation areas and digested by existing organisms (worms and microbes) in the soil.
		Storage of greywater during wet weather exacerbates the problems of pathogens in the greywater breeding in the tank.
	www.greywater.com.au /faq.htm (734 words)

	Safe Use of Household Greywater
		Greywater is ideal for irrigating firebreaks, because it contributes plant nutrients in the process.
		Poor quality greywater is not a problem if it is used to flush toilets, because the water goes into the sewer or septic system where it would have gone had it not been reused.
		Greywater in the tank may not only cause the flushing mechanism to malfunction, but could be backsiphoned into the fresh water supply if water pressure decreases suddenly.
	cahe.nmsu.edu /pubs/_m/m-106.html (1859 words)

	ALN No. 56: Holden: Inner city water efficiency: A case study
		As the quality of greywater and recycling systems differ from site to site, it is suggested that greywater users experiment to ascertain which plants in their own garden react adversely to greywater.
		With regard to greywater health issues, the state of research is such that it is left to individuals to make up their own minds as to what is "safe" and what not.
		Since greywater and its use is context-specific, it is suggested that the greywater practitioner should supplement research with hands-on experience, and allow common sense to prevail.
	ag.arizona.edu /OALS/ALN/aln56/holden.html (3089 words)

	GREYWATER (Site not responding. Last check: 2007-10-04)
		Greywater is produced in a residential or office environment by most uses of water that do not involve the human waste stream.
		Greywater is also used as a waste source to flush toilets, replacing the potable water that is normally used for other purposes.
		Greywater systems are not cheap, requiring extra plumbing, necessary filtration and treatment tanks, storage tanks, and pumps to transport the water through the system.
	poisson.ecse.rpi.edu /~jonma/greywater.html (2062 words)

	Frog Watch > Features > Household greywater wetlands
		The greywater is usually introduced at the bottom of the wetland, well underneath the top layer of mulch, generally through a perforated pipe with large holes that won't easily clog.
		So a greywater wetland for processing 500 liters of greywater a day for four days should be about 6,000 liters in volume, or 6 cubic metres (as 1/3 of 6000 liters is 2000 liters).
		Although most books on the use of greywater for backyard irrigation say that it's important to avoid using detergents with high levels of phosphates and certain other elements and compounds (especially since most Australian natives are not adapted to dealing with high nutrient soils), this is not neccesarily be the case with greywater wetlands.
	frogs.org.au /frogwatch/greywater.php (7201 words)

	Greywater (also spelled greywater, graywater, gray water)
		Greywater can replace fresh water in many instances, saving money and increasing the effective water supply in regions where irrigation is needed.
		Greywater is purified to a spectacularly high degree in the upper, most biologically active region of the soil.
		Greywater enables a landscape to flourish where water may not otherwise be available to support much plant growth.
	greywater.net (454 words)

	Greywater Guide (Site not responding. Last check: 2007-10-04)
		Greywater is the household water from showers, sinks, washing and general use, everything except toilets.
		The difference between greywater and flwater is that since greywater does not carry 'humanure' from toilets, greywater can be cleansed and used for irrigation much faster and safely.
		Greywater flows into a box through pipes with holes that drip the water over three layers of treatment material, with a drainage hole at the bottom corner.
	www.jerusalemcityfarmers.org /greywaterguide.html (3064 words)

	Greywater Re-Use: Hardware, Health, Environment And The Law (Site not responding. Last check: 2007-10-04)
		Greywater re-use for garden irrigation should be encouraged in urban and rural households.
		Greywater is far easier, safer and cheaper to re-use than flwater, and is the focus of this paper.
		Greywater is generated in the bathroom (180 L), laundry (110 L) and kitchen (55 L).
	www.rosneath.com.au /ipc6/ch08/marshall (2592 words)

	Greywater-Sustainable Building Sourcebook
		Greywater is defined as the wastewater produced from baths and showers, clothes washers, and lavatories.
		The use of greywater for irrigation requires separate flwater and greywater waste lines in the house.
		Greywater irrigation systems cost more than conventional spray and drip irrigation systems to install due to the tank used in greywater systems (a filter and special emitters are also needed for greywater drip irrigation systems).
	www.greenbuilder.com /sourcebook/Greywater.html (1087 words)

	Desert Waterways: Greywater Irrigation - Owner's Manual
		The drain field installed is intended to use the laundry greywater; however, there are instances in which laundry machine water should be avoided.
		The graywater generated by the laundry machine is intended to provide nutrients to the trees and shrubs near the drain field and therefore the needs of the trees and shrubs need to be taken into consideration.
		The greywater system installed on your property includes the surge tank, the pipes from the surge tank to the drain field, the pipes in the drain field and the drain field.
	www.desertwaterways.com /manual.html (2118 words)

	Greywater Guidelines-Sustainable Building Sourcebook
		The greywater (wastewater from baths, showers, laundry and lavatory sinks) flows from the house through the septic tank and into the evapotranspiration bed.
		Greywater in the drip system is released at the emitters just below the surface in strategic locations in the landscape.
		The amount of greywater available for irrigation is obviously directly proportional to the amount of water used by a household.
	www.greenbuilder.com /sourcebook/GreyGuidelines.html (1457 words)

	Gardening with greywater :: LGP
		Greywater is waste water generated from the bath, shower, washbasin and laundry which can be diverted for use on lawns and gardens.
		Kitchen greywater is not suitable as grease and oil from the kitchen can clog the plumbing in your home.
		A greywater system is really just a complex watering system for people who like to keep their gardens and lawn green.
	www.lgp.qld.gov.au /?id=3044 (520 words)

	Greywater System (Site not responding. Last check: 2007-10-04)
		The Clivus Greywater Irrigation System is a highly effective, simple method for using greywater for plant irrigation.
		greywater flows into the dosing basin, level controls in the dosing basin engage the effluent pump to fill irrigation troughs, bringing greywater evenly to the surrounding vegetation.
		Water, soap residue, and the small organic particles carried in greywater are brought directly to plant roots and soil organisms, which make use of the total contents of greywater.
	www.clivusmultrum.com /greywater.html (102 words)

	Greywater Recycling for toilet use.html
		Greywater treatment and recycling of the here suggested kind can be adapted to most households in moderate climate countries where daily showering is as usual as the water toilet.
		The greywater recycling device consists of a couple of vertical and communicating tubes made of PP, which are linked in a particular way to enable greywater to sediment, to purify, to overflow and so on, to contain the pump and the electrical elements for control.
		Actually first investigations on the spread of bacteria in greywater showed a low concentration as it would be accepted by European Law for rivers and lakes with the permission to bath and swim (Europaeische Badegewaesser-Richtlinie).
	www.reinerhildebrand.de /grau/grey.html (636 words)

	Greywater: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-10-04)
		Greywater is distinct from wastewater that has been contaminated with sewage sewage quick summary:
		Recycled greywater from showers and bathtubs can be used for flushing toilet toilet quick summary:
		A toilet is a plumbing fixture devised for the disposal of bodily wastes, including urine, feces, menses and vomit....
	www.absoluteastronomy.com /encyclopedia/g/gr/greywater.htm (625 words)

	SEARCH - Greywater Reuse (Site not responding. Last check: 2007-10-04)
		Greywater is domestic wastewater from bathtubs, sinks, washing machines.
		In existing greywater re-use installations, it is very often the case that the wastewater from kitchen sinks is not re-used as there is a fairly high biological oxygen demand due to organic waste from the cooking processes.
		Table 1 shows that greywater is considerably less polluted than flwater and simpler treatment may be applied to purify the water to re-useable standard.
	www2.rgu.ac.uk /subj/search/Research/MaterialsConservation/Wastewater/grwa.htm (204 words)

	Wastewater Management Program, WA State Department of Health
		drink greywater or apply it on anything that may be eaten, including root crops such as potatoes or carrots.
		Greywater systems are usually cheaper and easier to install during construction of a new home.
		If separating greywater from flwater is a problem, you might want to consider using a Subsurface Drip System (a type of septic treatment system).
	www.doh.wa.gov /EHP/ts/WW/greywater/greywater-4.htm (379 words)

	Southface Journal - Low Tech, Low Maintenance Greywater system
		However, instead of simply having the greywater exit the house through a single pipe or hose, the branched-drain system carries the water through buried pipes that branch several times.
		In our system, the greywater exits the house and then goes into one of two branching networks, depending on which way the diverter valve is set.
		The greywater pipes enter the buckets, where the water falls at least six inches to the gravel-covered bottom.
	www.southface.org /web/resources&services/publications/journal/sfjv104/sfjv104greywater.htm (1078 words)

	978 - Recycle greywater to water lawn, cut water/sewage bills
		Also, by reusing greywater, load requirements on municipalities' water and sewage treatment facilities are reduced so fewer expensive new facilities are needed.
		It is relatively simple to use greywater to water shrubs, gardens and trees in your yard.
		Since greywater is still warm, freezing during the winter is not often a problem.
	www.dulley.com /docs/f978.htm (666 words)

	What Is Greywater By: John Conway (Site not responding. Last check: 2007-10-04)
		The California Greywater Standards state that greywater is untreated household waste that has not come in contact with toilet waste.(4) So Greywater is the dirty water from washing machines, sinks, bathtubs, and showers.
		Greywater should stay separated from flwater which comes from toilets, kitchen sinks, dishwashers and photo lab sinks.
		This makes greywater a resource that should not be wasted because it can be used as an alternative for clean water in some outdoor and indoors water uses.
	www.humboldt.edu /~jhc8/Greywater1.html (288 words)

	Domestic Water Conservation: Greywater, Rainwater and Other Innovations
		greywater reuse, rainwater collection, water-conserving landscaping and irrigation practices, the installation of low-flow fixtures and appliances, and proper swimming pool maintenance.
		Greywater, or sullage, recycling is defined as the reuse of water from the sinks, showers, washing machine and dishwasher in a home.
		Greywater is run through a filter, typically a sand filter, to remove any organic matter, then relocated on site either to be treated by a separate process or used as-is.
	www.csa.com /discoveryguides/water/overview.php (3597 words)

	Greywater - Sustainable Gardening Australia
		Greywater is suitable for irrigating most garden areas including ornamental beds, lawns and fruit trees.
		Greywater systems are fundamentally gravity flow systems and as such cannot be used to irrigate areas that are above the greywater outlet point.
		Ideally, this greywater would be diverted from the inspection point of your plumbing directly to your garden beds with perforated hose or agi-flow.
	www.sgaonline.org.au /info_greywater.html (705 words)

	Greywater Reuse - Details (Site not responding. Last check: 2007-10-04)
		Greywater does not require the intensity of treatment that flwater requires to neutralize it.
		One-story homes on a crawlspace or basement foundation may present an opportunity for simple retrofit of greywater piping, but the feasibility of remodeling for greywater reuse should be examined on case by case basis.
		Because municipal codes are still evolving on greywater reuse, it is possible that the greywater drain would initially be installed to outflow into the main plumbing stack for future retrofit to a separate outfall.
	www.toolbase.org /tertiaryT.asp?TrackID=&CategoryID=1402&DocumentID=2137 (584 words)

	Greywater recycling system kits include free graywater consultation
		Compared to flwater, greywater has a very small amount of organic and pathogenic pollutants, so there truly is no need for treatment of graywater in a conventional septic tank.
		Greywater settling tanks ("filter basins") work exactly the same as septic tanks - they are just smaller since little or no solids are going into the system.
		All of the fittings required to install your greywater filter/settling tank are included*: threaded cleanout, inlet and outlet rubber grommets, neoprene gasket, tamper resistant fasteners, "self-cleaning" filter cartridge, handle extension kit, and a free hole saw kit to cut the inlet and outlet holes.
	www.thenaturalhome.com /greywater.html (3346 words)

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