1. Using rainwater to flush your loo

... water since the two systems can never be connected at the same time. This saves me from wasting fully potable water, drawn from the city's reserves, on this simple, essential but water intensive task. ...

2. Recycling of Greywater

... is used in certain agricultural companies (e.g. tree nurseries, paprika producing companies) and dwellings for applications where potable water is not required (e.g. garden and land irrigation, toilet ...

3. Greywater

... or potable water), nor heavily polluted (blackwater). According to this definition wastewater fcontaining significant food residues or high concentrations of toxic chemicals from household cleaners etc. ...

4. Green building

... be used for subsurface irrigation, or if treated, for non-potable purposes, e.g., to flush toilets and wash cars. Rainwater collectors are used for similar purposes. Centralized wastewater treatment systems ...

5. Solar Desalination and Disinfection

Solar distillation can be used to make saline or brackish water potable. The first recorded instance of this was by 16th century Arab alchemists. A large-scale solar distillation project was first constructed ...

6. Solar Energy

... clean waste streams of contaminants. Solar distillation and disinfection techniques produce potable water for millions of people worldwide. Simple applications include clotheslines and solar cookers which ...