What does natural water contain?

How can pure water be made?

What is desalination?

What is the boiling point of pure water?

Give a simple chemical test to show the presence of water

What level of dissolved salts and microbes should there be in drinking water?

How is water of the correct quality produced?

What do water filters contain that can remove some dissolved substances from tap water and improve taste and quality?

How do ion exchange resins work?

What are the argument FOR the addition of fluoride to drinking water

What are the argument AGAINST the addition of fluoride to drinking water

Why might chlorine be added to drinking water?