Reduce overall water consumption
Regulating building water supply to suite required demand will significantly reduce overall water consumption. Building water consumption, water use for personal cleaning and water used in cleaning can be reduced by at least half by installing low flow taps and low flow shower spouts. For example, just by installing low flow showerheads will reduce water consumption by around 50-70%, bringing the shower flow down to 6-9 litres a minute from 15 litres, without compromising on water pressure for your users.
For an average shower length of 8 minutes, this can save 60 litres of water. There is also the added benefit of corresponding energy and carbon savings.