Composting toilets for rural properties – with Matt King

Composting toilets – many people either love the thought of them or hate them. I think some of the dislike of the idea of the composting toilet is that we mistake it with memories of the old long drop – that definitely was a very unpleasant experience! The composting toilet is a very different beast – when its operating properly it’s aerobic (oxygen loving), fairly dry, and produces non-odorous CO2 – not methane, ethane and sulphurous odours.

In NZ, there are rules around properties that can have a composting toilet. If your property is connected to the mains sewage system then you must use it. However there are a significant number of households at the rural margins of Dunedin where this is not the case and where the composting toilet is a very suitable alternative to the septic tank and avoids many of the problems associated with septic tanks. In Dunedin, approximately 0.5% of households have composting toilets installed.

This show on COMPOSTING TOILETS is aimed at listeners who are not connected to the wastewater system. As well as all the rest of us who just find this a fascinating topic!

My guest is Matt King. Matt is the Director, Marketing manager, and maker of Emergency Composting Toilets, a business that has emerged subsequent to the earthquakes in Christchurch. Matt is familiar to the challenges faced by people following emergencies. Over the last few years he has travelled and worked through Indonesia and Papua New Guinea managing aid projects related to community resilience and tsunami recovery.

He is now based in Otaki, on the Kapiti Coast where he runs GreenEarth Development, a consultancy company focused on project design and management in sustainable construction and community development

To listen to this programme about Composting Toilets for Rural Properties please click on

To find out more about

This programme was originally broadcast on  the  21st May 2015 with the help of Otago Access Radio 105.4FM. Eco Living in Action is hosted by Maureen Howard and is supported by the Dunedin City Council.

Matt King

Matt King – Director, Marketing Manager and maker of Emergency composting Toilets

Matt showing the Emergeny omposting Toilet in flat paked state

Matt showing the Emergency composting Toilet in flat packed state

Double buket system for the Emergeny omposting Toilet. One buket is for solids, the other for liquid waste.

Double bucket system for the Emergency composting Toilet. One bucket is for solids, the other for liquid waste.


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