Review of composting toilets

All our composting toilets are designed for full-time domestic use and are certified as meeting Australian Standards. We have the largest range of waterless and microflush toilets available in Australia. Our systems are sold locally by Ecoflo Wastewater Management who provide excellent customer support throughout the lifetime of the product. Sun-Mar composting toilets offer outstanding value and are a cost effective and environmentally sensitive alternative to septic tanks and aerated water treatment systems. Read through our review of composting toilets in Australia to help you make your choice.

The following table compares the cost of an Ecoflo waterless composting toilet and separate Greywater system against systems involving the flushing of 35,000 litres per year of water down the toilet. The table is offered only as a guide. Installation costs differ widely depending on local site conditions.$500 per year.

 Equipment and InstallationOnging Cost
Waterless composting toilet with primary Greywater treatment$6,000 – $7,000Minimal
Septic Tank$7,000 – $12,000Low
Septic Tank with large sand filter or reed bed$12,000 – $15,000Low
Aerated water treatment system$12,000 – $18,000$500 per year


All Sun-Mar composting toilets have received Australian Standards Certification and are approved in most states. See Product comparison/summary table for current state approval status.