Across
- 2. when chlorine is added to water, what does it kill?
- 5. where do these dissolved minerals come from?
- 6. What's the first stage of water treatment called?
- 8. Which is the most suitable source of water for drinking?
- 10. where does our home water come from?
Down
- 1. What's the third stage of water treatment called?
- 2. Why is the demand for water increasing?
- 3. of manmade pollutants include
- 4. Where can water be abstracted
- 7. What's the second stage of water treatment called?
- 9. What is the name of the water supply that is a barrier constructed to hold back water and raise its level