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?

Reuse

Using greywater a second time instead of sending it away: on the garden, or into the toilet cistern. It is the cheapest water a household will ever have, since it has already been paid for and lifted. The options differ in where the water goes and in how much treatment that use demands.

Solutions

• Subsurface irrigation reuse: Pipes buried just under the soil of the garden that release cleaned used water around plant roots. The water goes straight to where plants drink, and nobody tou
• Direct greywater diversion to toilet flushing: Shower or bath water diverted straight to the toilet cistern or bowl by gravity or a simple bucket, with no treatment beyond settling, the lowest-tech greywater