Across
- 4. The sanitizing agent most used in water treatment. Can be found in three forms, dry, liquid and gas
- 5. The act of making naturally occurring substances, such as air and water, unclean or impure
- 6. A tower that serves as a reservoir that delivers water to a specific point
- 8. An artificial lake where water is collected and kept in a large amounts for use.
- 9. A pit or hole sunk into the earth to reach a supply of water
- 12. Living or growing in a water environment
- 13. Usually aquatic plants of cellular structure which do not have leaves, roots, flowers or seeds. Do have chlorophyll which is used to convert solar energy into chemical energy
- 14. To destroy disease-causing germs.
- 15. A chemical compound which is leached from submerged, decaying plant material. It is responsible for some brownish or tea colored water of natural water supplies.
- 16. The removal of suspended solids from water
- 17. An agent that causes a disease
Down
- 1. Material laid down by natural process
- 2. An organism that is too small to be seen without a microscope
- 3. Loose sedimentary material containing very small rock particles
- 5. The process by which unclean or impure substances are made clean and pure.
- 6. Water that has been used, as in manufacturing process
- 7. The process of adding chlorine to water to disinfect the water by destroying germs
- 10. The reduction of transparency of a liquid due to the scattering and absorbance of light by suspended particles such as organic matter, clay, silt, plankton and other organisms.
- 11. Microscopic single-celled organisms which are found in two forms, pathogenic and nonpathogenic.