A World Leader In Composting Toilets
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Our most popular self-contained composting toilets
Sun-Mar toilets are a safe and environmentally friendly method of waste treatment. Our composting toilets evaporate liquids and compost the solids, saving water and creating usable compost for your favorite shrubs or flower gardens.
Our 3 chamber design means easy operation and maintenance. Our patented Bio-drum means fast, odor-free composting, and we’re the only ones certified by the NSF to NSF/ANSI Standard 41 for residential and cottage use.
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Smithsonian Institute
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The Gold Standard
Sun-Mar is certified by the NSF under this stringent standard. Testing is conducted for 6 months at a NSF recognized, independent testing laboratory under a strict test protocol. There is only one performance standard for composting toilets in North America. This is National Sanitation Foundation NSF/ANSI Standard #41.
Click here to view our NSF listing for more information.