As the specialists at WCTNZ®, we provide New Zealand’s most advanced certified composting toilet systems specifically selected for tiny homes and small dwellings. Our range focuses on space, weight, and water efficiency, ensuring your build remains lightweight and functional without sacrificing comfort or reliability. Whether you require a compliant self-contained tiny house setup or a system for a remote off-grid cabin, our waterless toilets are designed for easy installation and straightforward council approval. When installed and vented to our technical specifications, these systems provide a robust, odour-free solution that meets the unique demands of the NZ tiny house movement and strict New Zealand building standards.
Gravity-fed GreyFlow™ diversion bundle with mid-size grease separation for sites with suitable fall. Dripper field components are not included as standard and should only be selected where sufficient downhill fall is confirmed.
Automatic backflushing GreyFlow™ recovery bundle for homes and sites with a sewer or onsite treatment pathway, combining PS-AG Automatic model selection and subsurface dripper field components.
WF-UPS250 wastewater pump station package with a 250L underground macerator pump station and large 100mm inlet/outlet grease trap to help protect the pump and reduce maintenance risk where kitchen wastewater may be present.
Recommended grouped wastewater bundle for larger tiny homes and small off-grid dwellings, combining a Nature Loo™ Alectura Premium composting toilet, Passway™ grease trap, GreyFlow™ PS-AG greywater diversion and dripper field components. Select the required products and options below.