Why Composting Toilets

At a practical level, composting toilets are hygienic, odourless, low maintenance, cost-effective, look comfortable in the bathroom, and save approximately. 60,000L (per household, annually) of fresh drinkable water from needlessly going down the drain.

By being waterless, composting toilets convert what would otherwise be widely dispersed pollution into a safe, natural humus soil. They just make sense! There is no need to combine two individually recyclable resources (water and excreta), to then go through the expensive and somewhat ineffective process of separating the two down the track. It seems counterintuitive!

Many people have chosen them for the following reasons:

✓ They are practical options for sites where water supply is limited, rocky, or poor-draining soil is present, proximity to waterways prohibits traditional septic systems

✓ They are low-maintenance, cost-effective systems for new builds and renovations

✓ You are committed to using ecologically sustainable ways of living and are aware of the damage conventional waterborne systems do to our waterways

✓ You need a second toilet that will be cheaper than connecting to an existing septic tank, or have a batch, garage, workshop, farm shed, minor dwelling, etc, which has minimal use

✓ You are a council member looking to promote a sustainable image at a council level, or a developer looking for facilities that can cope with variable use and minimal maintenance

Whatever your reason, we can match you with a system that will suit your needs. We operate in both residential and commercial sectors, with products to service any number of users. And, you have our full after-sales support!

Copyright © 2025 Waterless Composting Toilets NZ Limited (WCTNZ®). All rights reserved.

This content has been reviewed and approved by Dylan Timney, Managing Director of WCTNZ®, who brings over 17 years of composting toilet expertise and 16 years of experience in building and eco-construction in New Zealand.

Last reviewed: July 10, 2025