Notes from Ecobuild expo talks on Grey Water use:

• Greywater is waste water from showers, baths, washbasins, washing machines and kitchen sinks.
• Greywater reuse is the use of untreated greywater.
• Greywater recycling is the use of treated greywater.

Key technical issues to overcome using Grey Water:

• The age of the water..
• Stagnant water generates bioforms leading to unpleasant odours.
• User interaction.
• Anticipating users bathing habits.
• Low level of maintenance.