Geography-Water Resources

4. the careful use of resources to ensure that wastage is kept to a minimum.
5. fresh water which is stored in rivers, streams and lakes.
9. when impurities are removed from waste water through a treatment process.
10. one way to encourage water conservation.
11. the process of water filtration used in desalination where water is boiled and the water vapour is collected and condensed into fresh water.
12. the problem of water constraint in singapore.
14. the process of forcing water through a special membrane to remove very small particles, such as bacteria and dissolved salts, from water.
17. the Ministry of the Environment and Water Resources is also known as.
18. the knowledge, skills and tools that people use to meet their needs.

1. the use of advanced membrane technology to further treat used water to produce a very high grade water.
2. fresh water that can be found deep underground.
3. the process where larger particles and bacteria are removed.
6. water that is much cleaner than used water.
7. an arrangement between two or more countries regarding the supply and use of water resources over a specific period of time.
8. method that makes use of technology to increase water supply.
11. the process of removing salt from sea water.
12. a reason for water constraint.
13. an area over which rain falls and is collected.
15. being in a week or unfavourable position.
16. reclaimed water is also known as.