An alternative source must be suitable for the intended use and compatible with the washing machine. Clear appearance does not prove sanitary quality or the absence of sediment, iron, or other substances that can affect garments and the appliance.
Identify the source without grouping different waters together
Well water, collected rainwater, non-potable mains water, and treated gray water have different sources and risks. Treatment or permitted use for one does not automatically qualify the others. The tank and piping can also change the water quality before it reaches the machine.
What should be evaluated
- Sanitary quality appropriate for the intended use and requirements of the competent authority.
- Sediment and particles, as well as dissolved substances that a mesh filter does not retain.
- Hardness, iron, and other characteristics that may affect detergents, stains, or deposits.
- Temperature, pressure, and flow rate compatible with the equipment.
- Separation of lines and measures against cross-connections in accordance with local design.
The Australian recycled water guidelines set out risk management according to source and end use. They are a reference for approach, not authorization for an installation elsewhere.
Do not choose treatment based on color
A clear sample may contain contaminants that are not visible. The assessment should determine the analysis and treatment needed; this guide does not prescribe universal disinfection or filtration. Appliance screens do not turn water of unknown origin into suitable water.
To recover the water that comes out after washing, see gray water reuse, a separate issue. If mineral deposits appear, their treatment on garments does not correct the quality of the supply.
Confirm the source’s quality and authorized use before deciding on the physical connection to the machine.