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FREQUENTLY ASKED QUESTIONS

What about cleaning products?

The nutrients in cleaning products are used by the vegetation in the garden. Planting three story vegetation such as groundcovers, shrubs and trees ensures the nutrients are used. Cleaning products containing chlorine or caustic chemicals should not be disposed of down the greywater system as the chlorine is extremely toxic to soil organisms and vegetation. These products should be used in a bucket and when finished poured out over an already "dead" area eg paving, concrete or gravel, well away from garden vegetation.

Most cleaning products contain sodium which ends up in the irrigation areas. There are concerns that sodium can accumulate in certain types of clay soils causing them to clog. There are rememdies to these soil types such as ripping the irrigation areas and adding topsoil and intensive planting to augment existing vegetation. Increased organic content and moisture will increase worm populations which help to aerate the soil in the irrigation areas. The soil in the irrigation areas is improved by being kept constantly moist providing a conducive environment for naturally occuring soil organisms.

Is the system safe to use around children and pets?

The GRS does not create any noxious effluent, gases or smells and does not produce any health risks for children and animals. The quality of the greywater pouring from the outlets into the soil is the same as it was when it left the bathroom, laundry or kitchen where we were just in contact with it.

How long will the greywater recycling system last?

The GRS comes with a 20 year warranty but in reality the system will last as long as the plastic lasts - anything up to half a million years.

Can I water the lawn with my greywater?

The GRS is designed to water garden areas only. If you wish to water your lawn then you will need to install a diverter valve to redirect the greywater before distribution by the GRS. A 25mm flexible hose can be used to move around on the lawn. Greywater must not be stored for reuse as pathogen's (bacteria and viruses) will breed in the tank.

Is the Greywater Recycling System expensive to operate and maintain?

The GRS has no operating costs. It is a gravity fed filtration and distribution system which does not require any electrical or chemical inputs to operate. There are no pumps, filters, ultra violet lamps, compressors or any moving parts to wear out and replace. See maintenance requirements below.

Can I install and maintain it myself?

Although the GRS is designed to be installed by proficiently skilled non-tradespeople most if not all local councils will require installation by an authorised plumber. The GRS requires 2 hours maintainance per year which can be simply fitted into your gardening routine. One hour per year to add mulch to the Aerobic Grease Filter and one hour per year to inspect the 10 outlets.

Does it smell like a septic system does?

Septic tank based wastewater systems smell because bacteria and organic matter putrifies in the tank producing hydrogen sulphide amongst other gases. The GRS does not store greywater anywhere in the system avoiding this problem.

What about rinsing nappies?

The majority of the faecal matter should be disposed of in the toilet system. 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. The amount of faecal matter from rinsing nappies does not present a health and safety risk.

What happens in wet weather?

The GRS is susceptible to the same weather conditions as are all other wastewater systems. Conventional tank systems discharge during wet weather events unless they are switched off by the householder. Storage of greywater during wet weather exacerbates the problems of pathogens in the greywater breeding in the tank. Then a large volume of grossly contaminated effleunt is pumped out during dry weather potentiallly causing a health and safety risk. The benefit of the GRS is that stormwater diversion mounds diverts surface water from the irrigation areas leaving retention capacity in the irrigation areas. In extremely heavy weather events greywater may dilute in the stormwater but present no health or safety risk.

What happens in a flood?

In the event of a flood the outlet housing lids should be removed and stored. The Aerobic Grease Filter tank should be secured ie chained to the house. It is full of soil but may still be pushed away by floodwater. There is no risk of pathogens rising in the floodwaters from the system because the greywater is not stored. After the flood receeds the pipework can be flushed out and outlets cleaned of sediment and the lids replaced.