NCWR

About NCWR

Reduce-Reuse-Recycle

In a nutshell

In this activity we will find out about water footprint,the virtual water and how we can save water in our homes and schools.

Our objectives

In this activity you will:

  • Learn about the concepts of water footprint and virtual water.
  • Estimate how much water you consume everyday and how much you can save.
  • Identify behaviors that help to save water.

Things to use

A plastic bucket (or a bowl), a volumetric beaker (500mL or 1L), pens, calculator

Water-readings

Water (over) consumption

During the second half of the 20th century, water demand in the Mediterranean countries was doubled. This demand is expected to continue to increase in the future. Unfortunately, the mismanagement of water is evident at the household level as well.  Check the following data:

  • Though approx. 50L are enough to cover one’s daily water needs, some people use up to 300L a day!
  • Approximately, 30% of the daily household water demand is used in the toilet flushing!
  • Half a glass of water is enough to brush our teeth; when we let the tap running while brushing them we can waste up to 5L of water!
  • Typically, tourists use much more water than locals: for example, deluxe hotels of Malta and Greece consume more than 450L per guest per night!

Activity

Water footprint

Created in 2002 by Arjen Hoekstra, the water footprint is one of the “family” of environmental footprints that help us to understand how our production and consumption choices are affecting natural resources. The water footprint tells us how much water is required to produce the goods and services consumed by us (i.e. for food consumption, to water used in personal hygiene, leisure activities, etc.). What about you?  Visit this link to calculate your water footprint (average). The results might surprise you!

Group activity

Measuring our water footprint


  1. Wash your hands twice:
    • 1st time: let  the water running
    • 2nd time: turn  the tap off while washing.
    • Each time collect the water used () in the bucket and calculate it. Note it on the worksheet.
    • What was the amount of water saved in the second time?
  2. How much water can you save in a day, for an average of washing hands three times a day? How much water can be saved in a year by your family, in this way? Complete the worksheet.
  3. With the help of your parents check the last year’s water bills to calculate the average quantity of water consumed at home. Check also the readings of the water meter; the water bills are based on the data produced by them.
  4. Persuade your family to consume water more wisely e.g.  for a year. Find here some water saving tips.
  5. At the end of the year compare the amount of water consumed with the one of the previous year using the water bills. How much water was saved?

! Tip: During the year check regularly on pipes, taps or tanks in your home, the yard and balcony for any leakages or damages.

 

Water meter

 

Water-readings

The virtual water

It may not be visible, but millions of liters of water go into making the products we buy, use and throw away. Manufacturing everyday materials like paper, plastic, metal and fabric takes quite lot of water. Knowing these amounts of water needed to produce the goods we all use is an important first step towards using water wisely. Actually, water is needed to make almost all products we use every day. For instance, our diet makes up at least two-thirds of our total water footprint. This is primarily due to the large amounts of water needed to grow and produce the food. This hidden flow of water, the so-called “virtual water” is required for almost every step in the production processes for many different raw materials and finished products.

Find out more about the virtual water in various production processes here: https://www.watercalculator.org/water-use/ 

Water shares


Water meter

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Way forward

Surfing around the Internet

If you want to find out more about the water it takes to make the most commonly used products / virtual water visit this link.

Play this game to see how much water you can save by changing some of your habits.

Go back to the homepage!

Water works through time

Water in the city

The water basins

Desalination

Greywater recycling in practice

Do you know about grey water?

Wastewater treatment

Rainwater Harvesting Systems in practice

Rainwater harvesting

Reduce-Reuse-Recycle

Acting for Climate

Climate change: Why should I care?

Water resources

The water cycle

Where do I begin?

Water works through time

Let's discover the story behind the old fountains, cisterns and aqueducts of our town!

Continue!

Water in the city

What is the "urban water cycle"? Which are the important aspects of water management within a city environment?

Continue!

The water basins

In this activity we learn what a water drainage basin is and why it is important for the experts to study it.

Continue!

Desalination

Let's find out how sea and brackish water can become a freshwater resource!

Continue!

Greywater recycling in practice

How a greywater system is installed? Let's find out!

Continue!

Do you know about grey water?

Let's find out what "greywater” is and how we can use it!

Continue!

Wastewater treatment

In this activity we learn about how wastewater is treated and what we can do with the treated water.

Continue!

Rainwater Harvesting Systems in practice

What are the various types of rainwater harvesting systems? Let's find out more about them!

Continue!

Rainwater harvesting

Can we collect rainwater? And how do we use it? Let's find out!

Continue!

Reduce-Reuse-Recycle

What is our water footprint and how can we reduce it?

Continue!

Acting for Climate

What are the main sectors contributing to climate change? What are countries doing to address it? What can we do for climate collectively at school and at community level?

Continue!

Climate change: Why should I care?

We discuss the greenhouse effect and the greenhouse gases, how climate change is linked to our lifestyles and ways we can cope with it on a personal level.

Continue!

Water resources

Lt's discover the water resources of our region.

Continue!

The water cycle

Let's travel within the water cycle!

Continue!

Where do I begin?

Let's see why it is important to know about water in our region.

Continue!