Water Resources

3. one of the water constraint causes by physical features
4. process of converting sea water into fresh water by removing salt from water
5. process of filtration water to remove larger sized particles and bacteria from water
7. process of forcing water through a special membrane to remove very small particles from water
9. water being polluted by human activities
11. name of campaigns carried out to teach singaporeans to view water as a scarce and precious resource
12. Singapore first reservoir
13. being in weak or unfavorable position
16. an area over which rain falls and is collected
17. knowledge, skills and tools that people use to meet their needs

1. another type of water increasing water supply by buying water from neighbouring countries
2. arrangement between 2 or more countries regarding the supply and use of water resources over a specific period of time
6. water produced when impurities are removed from waste water through treatment process
8. careful use of water resources to ensure that wastage is kept to minimum
10. process of water filtration used in desalination where water is boiled and the water vapour is collected and condensed into fresh water
14. radiation way of disinfecting water
15. resource management of water supply