2. Dual Flush WC Cisterns
• In the past, WC cisterns had a capacity of 9 litres.
A flush can operate effectively with less than this,
therefore conserving water
• A dual flush WC has a choice of flushes
dependent on flushing requirements
i. Single flush = 4 litres
ii. Double flush = 6 litres
4. Spray Taps
• A lot of water is
wasted when
hand washing
• Spray taps
reduce wastage
by lessening the
flow of water
from taps
5. Flow Limiting Valves
• A valve that can be fitted on the pipework to an
appliance. It can be fitted with cartridges that only allow
a certain amount of water to flow through it. E.G 10 litres
per minute
6. Water Collection Systems
• Water collection systems can save large volumes of
mains water and reduce pressure on resources
• This is done by collecting water that would
otherwise be lost, and using it to flush toilets, water
gardens, wash cars and supply washing machines
• About 30 % of water used by the average
household is used for flushing toilets
7. Rainwater Harvesting Systems
• Rainwater is collected from the roof by the
guttering system
• It flows down the rainwater pipe through a filter
• It collects and is stored in an underground
cistern
• Finally it is pumped to toilet cisterns and used for
flushing and can also be used for outside taps
and washing machines
9. Grey Water Recycling
• Grey water is water that has been used for bathing,
and washing clothes
• It is collected from showers, baths, basins and
washing machines and stored in an underground
cistern
• Finally it is pumped to toilet cisterns and used for
flushing
