To reduce potable water use for sanitary purposes: up to five credits where the efficiency of the domestic-scale components (WCs, urinals, taps, showers, baths, dishwashers, washing machines) is assessed with the Wat 01 calculator and the resulting daily consumption per person, in litres, is compared with the baseline, with any greywater or rainwater yield offsetting non-potable demand; credits from a 12.5 percent improvement for one credit to 55 percent for five, one credit being the minimum standard from Good and two at Outstanding, with an exemplary credit at 65 percent.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.