All About Eco-Toilets

"NON–FLUSH, totally organic and self-emptying portable toilets which make use of hungry earthworms are being made in Knysna.

Knysna entrepreneur Adrian Wilson-Forbes said two test toilets at the Pezula resort had been operating successfully for the past seven months without any need for servicing.

This self-sustaining ecosystem houses earthworms in so-called worm houses made from recycled plastic in a container below the toilet bowl. The worms gobble up the solid waste and recycle it to produce compost.

Wilson-Forbes said: “The solids sit on top and are digested by the earthworms, which multiply or decrease in number according to the amount of food available.

“It takes a few weeks for the amount of worms to increase or decrease according to the quantity of food available and then the system finds its balance.”

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