Water Treatment Crossword Puzzle

QUESTIONS LIST:

• aquifer: natural underground reservoirs of porous layers of sand, rock or gravel.
• back pressure: pressure which creates resistance against the flow of water.
• chlorine: widely used in the disinfection of water and as an oxidizing agent for organic matter.
• filter: a device used to clean water by removing iron, silt, taste, odor, color, etc. before it is fed into the supply lines of the consumer.
• groundwater: the term describes all subsurface water and the source of well water.
• inorganic : matter which is not derived from living organisms and contains no organically produced carbon; includes rocks, minerals and metals.
• organic: having the characteristics of or being derived from plant or animal matter.
• potable: water which is considered safe and fit for human consumption.
• protozoa: any of a large group of mostly microscopic, one celled animals living chiefly in water.
• raw: untreated water from wells or any water before it reaches a water treatment device or process.
• residual: the amount of a specific material remaining in the water following a water treatment process.
• salt: the common name for the specific chemical compound sodium chloride.
• turbidity: a measure of the amount of finely divided suspended matter in water, which causes the scattering and absorption of light rays.
• virus: the smallest form of life known to be capable of producing disease or infection.
• water hammer: the shock wave produced by the abrupt change of water flow through a piping system.