TED-Ed: When is water safe to drink? - Mia Nacamulli

The video discusses the global issue of unsafe drinking water, highlighting the health risks posed by pathogens and chemical contaminants. It explains the water treatment process, including sedimentation, filtration, and disinfection, and the potential risks of chemical byproducts. The video also covers how to assess water quality and the importance of point-of-use treatment methods. Finally, it emphasizes the need for continued development in water treatment to ensure safe access to clean water worldwide.

What is one of the leading causes of death for children under five related to water?

• Malaria

• Diarrheal disease

• Malnutrition

• Respiratory infections

Which of the following is NOT a part of the typical water treatment process?

• Sedimentation

• Filtration

• Disinfection

• Evaporation

What is a potential risk of using chlorine in water disinfection?

• Decreased water pH

• Formation of harmful byproducts

• Increased turbidity

• Increased water hardness

Which of the following is a sign that water may be unsafe to drink?

• Clear appearance

• High temperature

• Excessive chlorine smell

• Sweet taste

What is the purpose of water testing kits?

• To change the water's pH

• To purify water

• To confirm the presence of contaminants

• To add minerals to water

Which ancient civilization used the sun's heat to purify water?

• Romans

• Chinese

• Egyptians

• Mayans

What is a benefit of point-of-use water treatment systems?

• They are only effective in urban areas

• They are portable and adaptable

• They require large infrastructure

• They are expensive to install