Two vermicomposting toilets onsite. A standard installation for a house bathroom plus a standalone toilet without a plumbed-in water supply. The toilet is flushed using grey water from the wash-hand basin.
I have a vermicomposting system that works with my regular bathroom. The tank is filled as per your workshop … mesh over the hole, brita to above the outlet, more mesh,then leaves, straw, small wood, bark strips from our burnt trees, kitchen waste and worms that I got from a friend in Tabua. Most of the time, it is just me but I have had volunteers in the past and so at those times, up to 5 people using it. no smells and it works wonderfully. It is just black water. My grey water goes out to a grey water soakaway that I grow an abundance of tomatoes in and never water. 🙂
I decided it was time volunteers had their own bathroom so I built one at the top of my land. I thought it had to be a compost toilet affair but didn’t want to go back to the days of emptying buckets of … so I decided to experiment with the vermicomposting. Water for flushing was the issue. The photos tell the story. Same filling in the IBC tank as my house one. I put a regular flush toilet in it that sits over the IBC tank. I have a hose buried underground that runs from my garden tap that fills a 20 litre water container with a tap on it, as I do not have continuous water supply – the hose that waters the veggie plot has to be switched for the bathroom hose. From that water container a jug is filled and poured into the wash basin (an old iron traditional free standing Portuguese one) to wash hands. The waste water from the sink is collected in a bucket underneath and that is poured into the open toilet cistern which has a rope on it to enable flushing.