water resource

3. a facility that provides a source of water
6. the knowledge, skills and tools that people use to meet their needs
10. water is an arrangement between two or more countries regarding the supply an use of water resources over a specific period of time
13. A stock or supply of money, materials, staff, and other assets that can be drawn on by a person or organization in order to function
14. the process of filtering water to remove larger sized particles and bacteria from the water
15. shortage of land
16. A thing or constituent that impairs the purity of something
17. occurs when there is a shortage of water to meet the needs of people
19. the process of water filtration where water is being boiled and the water vapour is collected and condensed into fresh water
20. the process of converting sea water into fresh water by removing salt from the sea water

1. A large natural or artificial lake used as a source of water supply
2. an area over which rain falls and is collected
4. the introduction of contaminants into the natural environment that cause adverse change
5. the careful use of resources to ensure that wastage is kept to a minimum
7. Drinking water or potable water is water of sufficiently high quality that it can be consumed
8. in a weak or unfavourable position
9. the change in a population over time
11. the process of forcing water through a special membrane to remove very small particles, such as bacteria and dissolved salts, from water
12. A colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain
18. produced when impurities are removed from waste water through a treatment process