We were looking out for things we can do to live more sustainably. One thing we'd love to do is get a composting toilet. Honestly, they've come a long way from the old "thunderbox" loos. They go in your normal indoors bathroom and look just like normal toilets until you try to flush them and find there isn't a flush. They cost a lot of money, though, and need professional installation. But when you bear in mind that a typical household toilet uses around 50,000 litres of water a year (that's about a third of total water usage) the environmental savings are immense.
If (like us) you don't want to install a composting toilet for whatever reason, you can still save water by using a displacement device in your cistern. This sounds complicated and expensive , but it can be as simple as putting an old brick in your cistern. It stops as much water entering the cistern when it fills up, and saves around 1-2 litres per flush, or 5 - 10,000 litres a year in a typical household. Anything that takes up space in the cistern (and doesn't float) will do. We have plastic bottles filled with water in ours. The bigger the cistern, the more bricks you should put in it. Old Victorian cisterns for example are huge, massively over-specified, and you should mostly fill them with bricks or bottles of water. If you find there is not enough water to
So that's April's challenge - will you install a water displacement device in your toilet cisterns and reduce your household water usage by about 10%?