Engineers and scientists around the world are helping lift communities out of poverty. We are going to look at how important safe, clean water is to a healthy life.

Write down a few words describing this scene

From Science Concept Cartoons Set 2 – Millgate House Education What do you think ?

Why did NASA send Mars Rover to find clues of water? Water signifies life Earth is the only planet we know that has water and without it life on Earth could not have evolved.

Where do you use water?

If a person in the UK had to carry home all their water in 2 litre bottles, on average, how many would they need each day? 4 bottles 20 bottles 75 bottles 90 bottles

On average a person in the UK uses 150 litres of water = 75 two-litre bottles

So how many do you think would an average person use in the USA?

On average a person in the USA uses 575 Litres of water = two-litre bottles

So how many do you think an average person in Italy would use?

On average a person in Italy uses 386 litres of water = 193 two-litre bottles

So how many do you think an average person in Bangladesh would use?

On average a person in Bangladesh uses 46 litres of water = 23 two-litre bottles

So how many do you think an average person in Ethiopia would use?

On average a person in Ethiopia uses 15 litres of water = 7.5 two-litre bottles

So how many do you think would an average person use in Mozambique?

On average a person in Mozambique uses 4 litres of water = 2 two-litre bottles

The World Health Organisation say that about 20 litres per person per day is essential for a decent life.

1 billion Over 1 billion people in the world DO NOT have access to clean water On average women nearly 4 KMs in Africa and Asia walk nearly 4 KMs to collect water 2 million Over 2 million people die each year from a waterborne disease

We all need water that is clean and safe to drink. What makes water unsafe?

What makes water unsafe? CONTAMINANTS zinc mercury lead cadmium copper oil pesticides Dirt Oil leaks from ships Rubbish in the sea Untreated sewage

How can we make water clean and safe?

Build a filter!

Every team should have a ‘Country Sheet’ and ‘Cost’ sheet. Read the information for your country. Within your groups:  Plan and design your filter  Complete the ‘Cost sheet’ and nominate 1 member to buy goods from the shop  Nominate 2 members to test and present the filter Activity

MaterialUnit Cost 2 litre bottle10 credits Straws2 credits each Rubber Band2 credits each Activated charcoal30 credits per 1/4 cup Cheesecloth4 credits/square Cotton wool2 credits/ball Gravel - coarse5 credits/cup Gravel - fine5 credits/cup Sugar5 credits per cup Toilet paper1 credit per sheet Sand- coarse10 credits/cup Sand - fine15 credits/cup A4 paper2 credits per sheet Information sheets Fully Labelled Diagram100 credits Unlabelled diagram50 credits Full instructions (Available if your country has a literacy rate of over 90%) 40 credits Partial Instructions20 credits

Well done!

The availability, supply and treatment of water is different around the world but by using our knowledge and skills we can ensure this vital resource is made available to all. ‘Everyone has the right to access the technologies that are essential to life.’

What can you do?

Turn off the tap while brushing your teeth Use less water at home 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

What can others do?

Recycle Recycle water Sewage water (from toilets) can be treated to remove impurities and also used to water the garden. Greywater is the waste water from baths and showers. It can be used to to flush toilets or to water the garden

Thank you!