water treatment

1. HOW DO WE USE AIR AND
WATER?
How do we get the water
to our houses?

2. AQUEDUCTS
Pipes that carry water to
where we need it.

3. RESERVOIRS
People build a DAM
across the river.
The collected water is called
a reservoir.
The high dam in Aswan

4. WELLS
We dig holes to pump up
underground water.

5. WATER TREATMENT
Making water safe for us to
drink.

6. STEP 1: WATER SITS STILL IN A TANK
Heavy things in the water fall
to the bottom of the tank.

7. STEP 2: WATER IS MOVED TO
LAYERS OF GRAVEL & SAND
These layers catch the mud
and other tiny things.

8. STEP 3: CHEMICALS ARE ADDED
To kill any harmful things in
the water
Chlorine is added to kill the
germs and bacteria.