Waterless Composting Toilets New Zealand.
Nature, at its best.

Every day, New Zealanders flush millions of litres of pristine drinking water away — along with valuable nutrients that could enrich our soil — down the drain.

WCTNZ® exists because water, waste and infrastructure can be managed more intelligently. What began with waterless composting toilets has grown into a wider approach to practical sanitation and wastewater systems for real New Zealand conditions.

We help people choose systems that conserve water, recover value where possible, protect downstream infrastructure and keep essential services working where standard plumbing is not the whole answer.