1) What happens after we use water (bathing, cleaning, toilet, etc.)? a) Water is polluted and cannot be used again. b) Water is filtered in a septic system. c) Water is treated in wastewater plants. d) B and C are correct. 2) A septic system... a) is a system for treating wastewater in rural areas (not in the city).  b) a system to treat water in a plant. c) a system to create sludge. d) a system to improve wastewater treatments at plants. 3) How is water carried to wastewater plants? a) In trucks. b) Through septic systems. c) In underground pipes. d) In tanks. 4) Thick solids called SLUDGE a) are taken to landfills. b) are decomposed or broken down by bacteria. c) are used as fertilizers. d) B and C are correct. 5) Before the water is discharged from the wastewater plant, UV light or chemicals like chlorine a) sink to the bottom of tanks. b) disinfect the water (kill bacteria and viruses in the water). c) help break down natural waste. d) help the formation of sludge. 6) Solid objects and grit are removed and a) are sent to a landfill. b) are burned. c) allowed to decompose. d) are discharged back to the waterways.

Wastewater Treatment Activity

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