Multiple choice

Which of the following water purification methods can be used to inactivate harmful protozoa?

  1. Plumbosolvency reduction

  2. Water fluoridation

  3. Ozone disinfection

  4. Granular Activated Carbon filtering

  5. Desalination

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ozone is an unstable molecule which readily gives up one atom of oxygen providing a powerful oxidizing agent which is toxic to most waterborne organisms. It is a very strong, broad spectrum disinfectant. It is an effective method to inactivate harmful protozoa that form cysts. It also works well against almost all other pathogens.