Wastewater Treatment Quiz

What is the Clean Water Act (CWA) primarily concerned with?

• Controlling noise pollution

• Managing solid waste

• Governing water quality

• Regulating air quality

Which type of water is considered safe to drink?

• Contaminated water

• Infected water

• Palatable water

• Potable water

What does turbidity measure in water?

• Dissolved oxygen

• Temperature

• Clarity

• pH level

Which of the following is a point source of water pollution?

• Fertilizer leaching

• Urban stormwater

• Agricultural runoff

• Discharge pipes

What is the primary purpose of measuring dissolved oxygen (DO) in water?

• To evaluate water clarity

• To measure pH

• To determine water pollution levels

• To assess temperature

What does a high biochemical oxygen demand (BOD) indicate?

• Low levels of nutrients

• High levels of dissolved oxygen

• High levels of organic material

• Low levels of organic material

Which of the following is a characteristic of palatable water?

• Contains high levels of heavy metals

• Contains harmful pathogens

• Unfit for domestic use

• Pleasant to taste

What is the effect of high turbidity in water?

• Improves fish growth rates

• Reduces visibility and aesthetic quality

• Decreases water treatment costs

• Increases water temperature

What is the main source of nitrogen in water bodies?

• Atmospheric deposition

• Natural mineral deposits

• Sewage and fertilizers

• Industrial waste

Which method is commonly used to measure chemical oxygen demand (COD)?

• Winkler titration method

• Chemical oxidation with potassium dichromate

• Electrometric method

• Colorimetric method