Can I improve Grey Water quality by using different types of soaps, detergents etc.?
The choice of cleaning products can reduce the environmental impact of Grey Water. Common washing powders contain sodium salts as bulking agents that produces a saline (salty) Grey Water. Some detergents and powder cleansers contain boron that can be toxic to plants in high concentration. It is recommended that for clothes washing you select products low in sodium: either liquid concentrates or powdered products that use potassium salts. There are websites that list the sodium content of a range of laundry products.
