water resources

1. 1 of the measures to conserve water supply
2. A process of removing undesirable chemicals, materials, and biological contaminants from raw water
3. A supply of water
5. An area over which rainfalls and is collected
6. Cleaning of sea water
7. Is a natural or artificial lake, storage pond or impoundments from a dam which is used to store water
8. The process of forcing water through a special membrane to remove very small particles
9. Arrangement between 2/more countries regrading the supply and use of water resources over a specific period of time
11. 1 of the method of desalination
12. Process of filtering water to remove larger sized particles and bacteria from the water
15. The knowledge,skills and tools that people use to meet their needs
16. Is a process to change materials into new products to prevent waste of potentially useful materials
18. Weak/unfavourable position
19. An outdoor water-use restriction is a ban or other lesser restrictions put into effect that restricts the outdoor use of water supplies
20. Process of making a product or service available

1. Ensuring that wastage is kept to a minimum
4. Water shortage problem
10. A protected area of importance for wildlife, flora, fauna or features of geological or other special interest
13. To revise the terms of (a contract) so as to limit or regain excess profits gained by the contractor
14. Process of converting sea water into fresh water by removing salt from the sea water
17. Process when water is boiled and the water vapour is collected and condensed into fresh water