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# Water For The World Presentation 2

## by EWB-UK on Feb 05, 2010

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## Water For The World Presentation 2Presentation Transcript

• Welcome!
• Water
• Water affects us all...
• Team Quiz
• Write down a few words describing this scene
• True or False? 10% of the Earth’s water is drinkable.
• If the average Briton had to carry home all their water in 2 litre bottles, how many would they have to fetch per day? A) 4 bottles B) 20 bottles C) 75 bottles D) 90 bottles E) 175 bottles
• True or False? A dripping tap wastes about 15 litres of water per day.
• How much water does it take to flush a toilet installed in the last 5 years? A) 3 litres B) 6 litres C) 9 litres D) 15 litres
• True or False? The average washing machine uses about 20 litres of water per load of laundry.
• Write down a few words describing this scene
• Write down a few words describing this scene
• True or False? 10% of the Earth’s water is drinkable.
• False Only about 0.8% of the Earth’s water is suitable for drinking.
• If the average Briton had to carry home all their water in 2 litre bottles, how many would they have to fetch per day? A) 4 bottles B) 20 bottles C) 75 bottles C) 75 bottles D) 90 bottles E) 175 bottles
• True or False? A dripping tap wastes about 15 litres of water per day.
• True Turning off or fixing a dripping tap saves about 15 litres of water every day.
• How much water does it take to flush a toilet installed in the last 5 years? A) 3 litres B) 6 litres B) 6 litres C) 9 litres D) 15 litres
• True or False? The average washing machine uses about 20 litres of water per load of laundry.
• False A typical washing machine uses closer to 50 litres of water per load.
• Write down a few words describing this scene
• Water for Everyone
• Where does the water we use come from?
• Lakes, rivers, etc.
• Rain
• Groundwater
• Artificial reservoirs
• What outlets do we take our water from?
• The tap
• Bottled
• Wells
• Public taps
• What links the natural source to the outlet?
• Infrastructure
• A clean water supply is crucial for everyone
• How do we get a clean supply?
• We must decontaminate the water.
• What things can contaminate water?
• Dirt and particulates
• Parasites, bacteria, viruses
• Poisons
• How can we remove these contaminants?
• Chemical purification
• Boiling
• Filtering
• Building a Filter
• Item Cost Activated charcoal £30 per cup Gravel, coarse £5 per cup Gravel, fine £5 per cup Sand, coarse £10 per cup Sand, fine £10 per cup Cheesecloth £2 per square Rubber band £2 each Cotton £1 per ball
• What can you do?
• Turn off the tap while brushing your teeth
• Install a “hippo” (Thames Water) www.thameswater.co.uk
• Take showers instead of baths
• Use only what you need when making a cup of tea...
• Wash fruits and vegetables in a bowl of water
• This presentation was made by EWB-UK and ARUP
• Thank you!