1. What is Grey Water?

Grey water is untreated water discharged from your showers, basins, and laundries only. Kitchen waste water has harmful amounts of fats and oils which may have an adverse effect on your soils therefore it is not normally considered as grey water.


2. How much grey water do I generate?

On average 100 Litres of reusable grey water is generated by one person every day. 


3. Will grey water affect my plants and my soils?

It is strongly recommended to use grey water friendly detergents with low phosphorous and low salt content.


4. Can I water my lawn area with grey water?

Sub-surface irrigation of lawns using grey water has been achieved successfully in many places. The Grey Flow systems do not come with any long term protection against root intrusion. Solutions such a trifluralin impregnated drippers (rootguard) or filters (tech-filters) are available to protect from root intrusions and should be used with sub-surface irrigation of lawn areas. (Please ask us for more details)


5. How much maintenance work do Grey Flow systems require?

Grey Flow systems come with automatic self-cleaning option (except for G-Flow). This reduces the standard maintenance cleaning work from every 2 to 3 months to once every year.  Systems without automatic self-cleaning typically require filters to be cleaned every 2 to 3 months. 


6. Can I connect Grey Flow systems to my existing irrigation system?

Standard irrigation systems cannot cope with the untreated Grey Water. Cross connection is not allowed. Connecting to a non-approved irrigation system will result in failure and void of warranty. We provide free expert advice and complimentary system design. 


7. Can I water a garden area smaller than the required minimum?

Each country or state may have different guidelines pertaining to the minimum disposal area required for the reuse of Grey water. These minimum areas have been set so as to protect the ground water resources and our environment (please refer to your local regulations). It is however possible to reduce the number of fixtures connected to your grey water outlet pipe, in order to help in reduce the amount of grey water generated. This will allow for a reduced minimum irrigation area requirement.


8. Can I water a garden area larger than the recommended maximum?

Yes it is possible but your garden may not get enough water during the peak summer months. To remedy this situation you can provide a top up system. The use of multiple stations with the grey flow systems should be done through the use of a manual 3 way valve or a Grey Flow rotor hydraulic indexing valve. Automated solenoid valves should not be used as they are not designed to cope with the poor quality of the grey water.