Sustainable management of water Quiz 1

How can laws be used to improve the quality of water in countries?

• Companies can be banned from dumping waste into water sources, preventing pollution

• The government provides equipments to clean up the river

• Companies can dump waste into water sources, causing pollution

[Improving water through laws]

In Singapore, companies need ​ (a)   ​ from the ​ (b)   before they can release waste water into water bodies.

• permission
• National Environmental Agency
• punishment
• Public Utilities Board
• National University of Singapore

The amount of water used is know as ​ (a)  

• consumption
• regulation
• provision

Match the following descriptions to the correct strategies

• Importing water

• Banning companies from releasing wastewater into public water sources

• Reducing water consumption

• Buying water from Malaysia

• Improving water technology

• Treating wastewater into drinking water using advance filtration technology

• Improving water quality through laws

• Buying a more water efficient washing machine

The image below shows an initiative carried out in Singapore to sustainably manage the use of water.

Which strategy is this a part of?

• Improving water quality through laws

• Importing water

• Reducing water consumption

NEWater and desalination are parts of a strategy that Singapore uses to sustainably manage water.

Which strategy is NEWater and desalination a part of?

• Improving water quality through laws

• Importing water

• Improving water technology

• Reducing water consumption

What is desalination?

• The use of evaporation to remove water from salt

• The treatment of wastewater into safe drinking water

• The removal of salt from saltwater using membrane technology which produces freshwater

[Improving water technology]

Why is desalination a good strategy for Singapore to use to increase its water supply?

Answer explanation

Desalination is a good strategy for Singapore to use to increase its water supply because it is a reliable and sustainable source of freshwater.

Being surrounded by saltwater, desalination allows us to use this resource which would otherwise be wasted.

[Improving water technology]

Arrange the process of desalination in the right order.

• The pre-treated water is pumped through a membrane to separate water from any dissolved particles in the water

• Seawater is screened and filtered to remove any fine particles or microorganisms

• The water is then disinfected and then remineralized

What does it mean to import water?

• To treat wastewater into drinking water

• To get water from a neighboring country at a price

• To change seawater into freshwater

• To get water from underground