Dive into the Water Crossword Challenge!

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Across
  1. 4. The term for when too many nutrients cause excessive algae growth in water bodies.
  2. 6. Where does PETRONAS use water?
  3. 14. Reduce, __________, Recycle.
  4. 15. An enterprise digital solution that enables end-to-end monitoring of water systems to effectively manage freshwater withdrawal, water usage and water discharges at assets.
  5. 16. A long period of no rain.
  6. 17. Water that is brought to the surface during operations which extract hydrocarbons from oil and gas reservoirs.
  7. 18. Alternative water supply.
  8. 20. A barrier built across river to store water.
Down
  1. 1. Process of removing salt from seawater to make it drinkable.
  2. 2. A study to find out the physical, chemical, and biological properties, as well as the amount of different substances in the wastewater.
  3. 3. The biggest man-made lake in Southeast Asia.
  4. 5. The process of saving and using water wisely.
  5. 7. A place for storing liquid, especially a natural or artificial lake providing water for a city or other area.
  6. 8. The largest ocean in the world.
  7. 9. A certified personnel who possess both technical competency in the operations of sewage treatment plants and comprehensive understanding of the related regulatory requirements.
  8. 10. The United Nations observance held on 22nd March.
  9. 11. Water in gas form.
  10. 12. Water molecule is made from one oxygen atom and two ________ atoms.
  11. 13. Water provider in Terengganu.
  12. 19. A form of water that is frozen.