Waterless Toilets

You Are Here: Home / Waterless Toilets


“Reduce your Flow”

The Nature Loo & Sun-Mar Toilet Range minimise your homes flow of H2O.

Ecoflo’s waterless toilets offer a hygienic way to recycle human waste in a manner that avoids polluting and wasting precious water. Our Nature Loo models rely on a ‘batch composting process’ while our Sun-Mar models use a combination of a ‘batch’ and ‘continuous composting process’.

All of our systems are designed to ensure the correct levels of moisture, temperature, oxygen, carbon and nitrogen required to achieve good composting are present in the chambers. Moisture is managed through drainage and evaporation systems which remove excess liquid from the solids. Oxygen is regulated using low-wattage ventilation systems which aerate the compost and also serve to evacuate any odours from the toilet room. The ideal temperature is achieved through exposure of the black Nature Loo chambers to sunlight and the use of heating elements for Sun-Mar systems. The carbon/nitrogen balance is managed by regularly adding carbon-dense mulch to the pile. At the end of the composting process microbes have broken down the waste into humus, a soil-like substance with an earthy odour.

Waterless Toilet - Evolution Solar Kingaroy

Greywater Treatment

Below are the systems we currently offer as a package with our waterless toilets. We offer primary and secondary treatment systems to suit local council requirements. For further information on the right system for your needs give us a call.


The reason we promote the separate management of greywater is to avoid wasting water on managing your toilet. Also, by keeping black waste separate from greywater you avoid contaminating tens of thousands of litres of water with potentially harmful (pathogenic) bacterial. This means the greywater is much easier to treat to a sufficient standard to be dispersed above or below ground.

On average, Australian households use a total of 240,000 litres of water a year if they have a flushing toilet. According to the Victorian Plumbing Industry Commission a 5,000L rainwater tank on a 100m2 roof area would yield 60,000L per year. So as well as reducing a household’s water demand by installing a waterless toilet, reusing greywater in an effective manner is also vital to the design of a self-sufficient sustainable home.