How could we How could we save water ?save water ?

Tap water runs Tap water runs when I wash when I wash my teethmy teeth … …

What volume of What volume of water did I waste?water did I waste?

We must We must measure measure the flow!the flow!

HOW ?HOW ?

We need :We need :

A tap (of course!)A tap (of course!)

A test tube (to A test tube (to measure volumes)measure volumes)

A chronometer (to A chronometer (to measure durations)measure durations)

Measure of volumeMeasure of volume

Measure Measure of of

durationduration

Our resultsOur results

Volume : 130 mL = 0,13 LVolume : 130 mL = 0,13 L

Duration : 1 sDuration : 1 s

Our interpretationOur interpretation

If 0,13 L run during one second…If 0,13 L run during one second…

During one minut 0,13 x 60 = 7,8 L During one minut 0,13 x 60 = 7,8 L run…run…

And during 3 minuts 7,8 x 3 = 23,4 L And during 3 minuts 7,8 x 3 = 23,4 L run!run!

Our conclusionOur conclusion

23,4 liters! It’s wasteful!23,4 liters! It’s wasteful!

Advice to save waterAdvice to save water

Switch off the tap Switch off the tap when you wash when you wash your teeth!your teeth!

Goodbye Poland and Goodbye Poland and Turkey!Turkey!