About us

Welcome to WCTNZ®

NZ’s trusted name in composting toilets and greywater systems

Proudly Kiwi owned and operated since 2007

At Waterless Composting Toilets NZ (WCTNZ), we’re committed to helping New Zealanders reduce water use, manage waste sustainably, and move toward smarter off-grid living. Since 2007, we’ve built a solid reputation for providing high-quality products, reliable advice, and practical support to homeowners, councils, tiny house builders, and large-scale developers alike.

✓ Real people

We manufacture and supply composting toilets and greywater systems to a wide range of clients in all sectors of the market. Whether you're a large-scale project manager or a small, motivated homeowner, we have the solutions you need to achieve your sustainability goals. 

✓ Quality products

We supply proven technologies that conserve water, reduce waste, and provide a safe, hygienic alternative to conventional wastewater systems. Our range includes composting toilets, greywater systems, and complete system packages designed to perform long-term with minimal fuss.

✓ Real support

Our team takes the time to understand your needs. We offer a free system specification service to guide you toward the right setup—and we’re just a phone call away whenever you need advice. For commercial and government projects, we also provide consultancy services to help meet environmental objectives with confidence.

✓ Sustainable Impact

Since 2007, we’ve built a strong reputation for delivering high-quality products and trusted service throughout Aotearoa New Zealand. Our composting toilets and greywater systems are used and relied on by a wide range of customers—from homeowners to councils—and their continued satisfaction speaks to our dedication to practical, sustainable solutions.

In a time when our relationship with the environment urgently needs rethinking, we’re proud to represent systems that make a real, positive impact—for the planet and the people who use them.

✓ Need help choosing a system?

Call us on 0800 022 027 for free advice on specification and setup, and take the next step toward sustainable sanitation today.

WCTNZ® | Waterless Composting Toilets NZ Limited | Copyright 2024 ©