This may be a bit of a taboo subject in polite society…but it is a very important subject for those of us who choose to be responsible for as much of our own lives as possible; toilet designs.
Until recently I have been happy using a short-drop toilet design on our block; this consists of a vase shaped hole about 1.25 meters deep, 60 cm wide at the bottom and tapering to about 40 cm wide at the top. On top of this pit is placed a movable pedestal made from half a plastic live barrel with a toilet seat bolted on top. A tarp stretched over a poly pipe hoop frame completes the set up. We ‘flush’ by sprinkling a can of lime over the contents to lower the pH and make the contents more worm friendly and less fly friendly. This kind of toilet means that I have to dig a new hole every school holidays.
Lately I have been experimenting with adding compost worms to the mix. Once a new hole is dug and in use for a week or so, I tip in one container of compost worms from the worm farm at school. This makes the hole last roughly twice as long as previously; presently 20 weeks is the record. This means I have to dig less and can avoid the deconstructing and reconstructing of the toilet for a bit longer.
My new plan consists of digging a big enough pit to hold a year’s worth of…well….contents, and adding worms to that. I am hoping this will allow enough time for the worms to reduce the contents to worm castings and baby worms, which will then burrow away to seek a new life in a far off place, thus keeping the pit level to an acceptable level permanently (or at least a very long time). Then I can build a more permanent and attractive structure over the top of the pit.
According to the World Health Organisation Pit Latrine Designs, when digging a pit toilet you should allow 0.06 m3 per person per year. In our house that equates to (0.06 x 4 = 0.24 m3) to allow for visitor usage as well. This isn’t a huge hole really. I have calculated this to be about the size of a 240 liter fridge.
I am currently digging away at the pit for this toilet and will post more photos as I get to each stage. The ground is very hard at the moment due to the dry weather so going is slow. The next question will be “What do I build the toilet shed out of?”
Do you take responsibility for your own waste?
Would you like to?
Any ideas or comments welcome.
4 thoughts on “Short drop toilets”
Why not just a regular composting toilet? Poop, cover in sawdust, empty it into a heap every few days. Rot over a year or two. Dig it into the soil – in around trees.
Hi Pavel, There is a lot of handling of poop in that plan. I am looking for an option that allows me to do less but without using too many resources.
Yes, the handling of poop is a bit of a downer. Milkwood Permaculture have a neat system. It incorporates wheelie bins. Fill one up, wheel it away to break down, wheel in another.
Pingback: Home Biogas system- part three- the toilet | Chronicles of a humpy dweller