A NoMix toilet, which separates liquid and solid waste (Photo: Judit Lienert)
If you’ve ever considered the humble urinal, you might have noticed that it uses much less water than a toilet. It only makes sense - since they don’t receive any feces, urinals don’t need all the water necessary to carry such solid waste through to the sewer line. When you use a toilet and just urinate, however, you’re still flushing away just as much water as if you, uh, went “Number 2.” If you were using a NoMix toilet, however, the Number 1 and Number 2 would go separate places, with the flushes being needed for solid waste only. It’s a good enough idea that in a recent pilot project, users in seven European countries gave the device a thumbs - or should that be bottoms? - up.