Water Treatment Process

The Water Treatment Process

How do we know the water that we drink is 'clean' or safe to drink?

Open Ended

Where does the water in our taps come from?

Dublin water:

The Poulophouca reservoir in Co Wicklow

Poulaphouca Dam

Open Ended

What sort of substances need to be removed from this water before it is safe for us to drink it?

Open Ended

How is the water 'cleaned' before we drink it?

Irish Water video

https://www.youtube.com/watch?v=iYFwFRWOEho&ab_channel=IrishWaterUisceEireann

Multiple Choice

True of false: Raw water is safe to drink?

• True

• False

Multiple Choice

What is the name of the first stage in the water treatment process?

• Settlement

• Fluorination

• Screening

• Chlorination

Multiple Choice

What is removed during the screening process?

• Small particles that settle on the bottom

• Bacteria and Viruses

• Large items such as branches, sticks and sometimes fish

Multiple Choice

After screening, what is the name of the next stage in the water treatment process?

• Screening

• Settlement/ clarification

• Fluorination

• Chlorination

Multiple Choice

What substance is used to filter fine particles from the water?

• Grass

• Soil

• Hay

• Sand

Multiple Choice

What chemical is added to the water to kill micro-organisms such as bacteria that could be in the water?

• Oxygen

• Fluorine

• Chlorine

• Iodine

Multiple Choice

Why is fluorine added to water in the final stage of water treatment?

• To make it taste better

• To prevent tooth decay

• To make sure it stays the right colour

• To protect the pipes