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    GreyFlow™

    WCTNZ® is proud to be the official distributor of GreyFlow™ composting toilets in the Realm of New Zealand (New Zealand, the Cook Islands, Niue, Tokelau and the Ross Dependency)

     

    GREYFLOW™ World Leading Greywater Diversion Technology. Reduces water bills, uses fewer water resources, irrigates your garden during water restrictions, and decreases demand on energy for sewage transport.

    GreyFlow™ sets the standard in greywater diversion. Reuse shower and laundry water via compliant GreyFlow™ systems so you save water, keep gardens thriving through water restriction periods, and reduce network/onsite system load.

    The GreyFlow™ GWDD range is WaterMark™ certified and award-winning (2018 Australian Water Association).

     

    Cut mains water use & bills

    Keep gardens alive in restrictions

    Lower load on sewers/onsite systems

    Reliable, low-maintenance filtration & pumping

    ✓ WaterMark™ Certified

     

    Say yes to greywater done right

     

    Notes: Greywater systems are a great way to save water. In New Zealand, the compliant method is subsurface land application (below ground)—not surface/sprinkler irrigation—so you can reuse greywater safely and within council rules.


    WCTNZ® | Waterless Composting Toilets NZ Limited | Copyright 2025 ©

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    GreyFlow™ | PS-AG-M4 (Manual 400W) - 100mm inlet

    GW GFPS-AG-M4
    The GreyFlow™ PS-AG-M4 Manual 400W is suited for high-flow greywater diversions where average users of 2 - 5 people full time are in residence and there is very hilly ground for the irrigation discharge fields. Max Head 21M Max Flow 180 LPM (suited for land application areas that are hilly to steep terrain with elevations no more than 3 meters)
    $2,338.09 excl GST

    GreyFlow™ | WF-UPS250 | 250L Underground Pump Station - 1500W Macerator

    WF-UPS250
    The GreyFlow™ | WF-UPS250 | 250L Underground Pump Station – 1500W Macerator is a compact all-wastewater pump station for residential and light-commercial sites. It collects and macerates sewage and greywater, then pumps it to a higher-level sewer or treatment system where gravity fall isn’t available.
    $4,026.25 excl GST

    GreyFlow™ | WF-UPS320 | 320L Underground Pump Station - 1500W Macerator

    WF-UPS320
    The GreyFlow™ | WF-UPS320 | 320L Underground Pump Station – 1500W Macerator is a compact all-wastewater pump station for residential and light-commercial sites. It collects and macerates sewage and greywater, then pumps it to a higher-level sewer or treatment system where gravity fall isn’t available.
    $4,248.89 excl GST

    GreyFlow™ | PS-AG-S1 (Automatic 100W) - 100mm Inlet

    GW GFPS-AG-S1
    The GreyFlow™ PS-AG-S1 (Automatic 100W) is suited for low-flow greywater diversions where average users of 1-3 people full time are in residence and there is slightly hilly ground for the irrigation discharge fields. Max Head 6.5M Max Flow 70 LPM (suited for land application areas that are flat with elevations no more than 1 meter)
    $2,767.82 excl GST $2,560.23 excl GST

    GreyFlow™ | PS-AG-S3 (Automatic 300W) - 100mm Inlet

    GW GFPS-AG-S3
    The GreyFlow™ PS-AG-S3 (Automatic 300W) is suited for medium flow grey water diversions where an average user of 2-5 people full time is in residence and there is hilly ground for the irrigation discharge fields. Max Head 8M Max Flow 180 LPM (suited for land application areas that are flat & hilly with elevations no more than 3 meters)
    $3,061.44 excl GST $2,831.84 excl GST

    GreyFlow™ | PS-AG-S4 (Automatic 400W) - 100mm Inlet

    GW GFPS-AG-S4
    The GreyFlow™ PS-AG-S4 (Automatic 400W) is suited for high flow grey water diversions where average users of 2 - 5 people full time are in residence and there is very hilly ground for the irrigation discharge fields. Max Head 21M Max Flow 180 LPM (suited for land application areas that are hilly to steep terrain with elevations no more than 3 meters)
    $3,268.12 excl GST $3,023.01 excl GST