Across
- 2. water from the sea, or water to which salt has been added
- 6. water that comes naturally out of the ground and has not been treated with any chemicals, usually sold in bottles
- 7. water to drink that you buy in bottles
- 8. you can drink safely
Down
- 1. water that comes out of a tap
- 3. water that comes out of a system of pipes into buildings
- 4. water that has natural substances in it, and is sold in bottles
- 5. water in lakes, rivers etc that does not contain salt