Across
- 3. is the act of removing salt from sea water
- 4. is the process where dirty water is boiled to produce water vapour and then condensed to form water droplets
- 5. refers to the act of conserving water
- 7. is much cleaner than used water
- 9. are fresh water that can be found underground
- 11. is caused by people carelessly dumping waste into rivers
- 12. refers to the water we buy from other countries
- 13. are the ponds that collect rainwater to channel the water to various reservoirs
- 15. refers to the water shortage
- 18. is a method singapore use to increase the supply of fresh water
Down
- 1. is the end product of the cleaning of water
- 2. is an agreement between 2 or more countries regarding the supply of water
- 5. is when tax is added to the price of water consumed by households
- 6. may result in singapore not being able to sustain our water supply
- 8. is the process where pressure is applied to the water to force it through a special membrane to remove waste
- 10. refers to the use of water
- 13. is the need to manage our water supply
- 14. is an area where rain falls and is collected
- 16. is the act of making used water into usable water
- 17. contains salt