Lowtech Graph lists low-tech options for every need of a home. Here you can compare them, find tutorials to build them, and link them together into a circular system. Why low-tech?

Handwashing

Washing hands, which happens many times a day and takes very little water each time. Because the water is barely dirty, it is the easiest in the house to catch and use again. The options here are about where the basin sits and where its water goes next.

Solutions

• Cistern-lid handwash basin (handwash water reused for flushing): A small basin on the toilet cistern lid, fed by the cistern’s own fill pipe. You wash your hands in clean drinking water, and that water drains into the cistern