Where rainwater flushes toilets or urinals, efficient use must be achieved by urinal flushing of at most 2.5 litres per stall or 600 mm of continuous wall and dual flush closets at 6 and 3 litres or 4.5 and 3 litres, or equivalent measures, within stated tolerances; vacuum drainage is exempt. Deemed-to-Satisfy is B6D4. New South Wales replaces the clause because of BASIX.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.