1. What is the primary purpose of a water distribution system?
o A) To generate electricity
o B) To deliver potable water to consumers
o C) To treat wastewater
o D) To store natural gas
o ANSWER : B) To deliver potable water to consumers
2. Which of the following is a surface water source?
o A) Well
o B) Spring
o C) Reservoir
o D) Aquifer
o ANSWER : C) Reservoir
3. What is groundwater?
o A) Water on the surface of the earth
o B) Water found underground in soil and rock formations
o C) Water in the atmosphere
o D) Ocean water
o ANSWER : B) Water found underground in soil and rock
formations
4. Which process removes particles from water by allowing them to
settle?
, o A) Filtration
o B) Chlorination
o C) Sedimentation
o D) Fluoridation
o ANSWER : C) Sedimentation
5. What is the purpose of chlorination in water treatment?
o A) To add color
o B) To disinfect and kill harmful microorganisms
o C) To add minerals
o D) To increase pH
o ANSWER : B) To disinfect and kill harmful microorganisms
6. What does "potable water" mean?
o A) Water used for irrigation
o B) Water safe for human consumption
o C) Industrial water
o D) Polluted water
o ANSWER : B) Water safe for human consumption
7. Which chemical is most commonly used for disinfection in water
systems?
o A) Sodium
o B) Chlorine
o C) Iron
o D) Copper
o ANSWER : B) Chlorine
8. What is an aquifer?
o A) A surface water body
o B) An underground layer of water-bearing rock
o C) A water treatment plant
, o D) A storage tank
o ANSWER : B) An underground layer of water-bearing rock
9. What is the purpose of filtration in water treatment?
o A) To add chemicals
o B) To remove suspended particles
o C) To increase pressure
o D) To add oxygen
o ANSWER : B) To remove suspended particles
10.What is coagulation in water treatment?
o A) Adding chemicals to help particles clump together
o B) Heating water
o C) Adding chlorine
o D) Filtering water
o ANSWER : A) Adding chemicals to help particles clump
together
11.Which of the following is NOT a common source of water
contamination?
o A) Industrial waste
o B) Agricultural runoff
o C) Proper chlorination
o D) Sewage
o ANSWER : C) Proper chlorination
12.What is turbidity in water?
o A) Temperature measurement
o B) Cloudiness or haziness caused by suspended particles
o C) Salt content
o D) Oxygen level
, o ANSWER : B) Cloudiness or haziness caused by suspended
particles
13.What does pH measure in water?
o A) Temperature
o B) Acidity or alkalinity
o C) Color
o D) Pressure
o ANSWER : B) Acidity or alkalinity
14.What is the typical pH range for drinking water?
o A) 1.0-3.0
o B) 4.0-5.0
o C) 6.5-8.5
o D) 10.0-12.0
o ANSWER : C) 6.5-8.5
15.What is fluoridation?
o A) Removing fluoride from water
o B) Adding fluoride to water to prevent tooth decay
o C) Measuring water flow
o D) Cleaning pipes
o ANSWER : B) Adding fluoride to water to prevent tooth decay
16.Which government agency sets drinking water standards in the
United States?
o A) FDA
o B) EPA
o C) OSHA
o D) DOT
o ANSWER : B) EPA
17.What does MCL stand for?
o A) To generate electricity
o B) To deliver potable water to consumers
o C) To treat wastewater
o D) To store natural gas
o ANSWER : B) To deliver potable water to consumers
2. Which of the following is a surface water source?
o A) Well
o B) Spring
o C) Reservoir
o D) Aquifer
o ANSWER : C) Reservoir
3. What is groundwater?
o A) Water on the surface of the earth
o B) Water found underground in soil and rock formations
o C) Water in the atmosphere
o D) Ocean water
o ANSWER : B) Water found underground in soil and rock
formations
4. Which process removes particles from water by allowing them to
settle?
, o A) Filtration
o B) Chlorination
o C) Sedimentation
o D) Fluoridation
o ANSWER : C) Sedimentation
5. What is the purpose of chlorination in water treatment?
o A) To add color
o B) To disinfect and kill harmful microorganisms
o C) To add minerals
o D) To increase pH
o ANSWER : B) To disinfect and kill harmful microorganisms
6. What does "potable water" mean?
o A) Water used for irrigation
o B) Water safe for human consumption
o C) Industrial water
o D) Polluted water
o ANSWER : B) Water safe for human consumption
7. Which chemical is most commonly used for disinfection in water
systems?
o A) Sodium
o B) Chlorine
o C) Iron
o D) Copper
o ANSWER : B) Chlorine
8. What is an aquifer?
o A) A surface water body
o B) An underground layer of water-bearing rock
o C) A water treatment plant
, o D) A storage tank
o ANSWER : B) An underground layer of water-bearing rock
9. What is the purpose of filtration in water treatment?
o A) To add chemicals
o B) To remove suspended particles
o C) To increase pressure
o D) To add oxygen
o ANSWER : B) To remove suspended particles
10.What is coagulation in water treatment?
o A) Adding chemicals to help particles clump together
o B) Heating water
o C) Adding chlorine
o D) Filtering water
o ANSWER : A) Adding chemicals to help particles clump
together
11.Which of the following is NOT a common source of water
contamination?
o A) Industrial waste
o B) Agricultural runoff
o C) Proper chlorination
o D) Sewage
o ANSWER : C) Proper chlorination
12.What is turbidity in water?
o A) Temperature measurement
o B) Cloudiness or haziness caused by suspended particles
o C) Salt content
o D) Oxygen level
, o ANSWER : B) Cloudiness or haziness caused by suspended
particles
13.What does pH measure in water?
o A) Temperature
o B) Acidity or alkalinity
o C) Color
o D) Pressure
o ANSWER : B) Acidity or alkalinity
14.What is the typical pH range for drinking water?
o A) 1.0-3.0
o B) 4.0-5.0
o C) 6.5-8.5
o D) 10.0-12.0
o ANSWER : C) 6.5-8.5
15.What is fluoridation?
o A) Removing fluoride from water
o B) Adding fluoride to water to prevent tooth decay
o C) Measuring water flow
o D) Cleaning pipes
o ANSWER : B) Adding fluoride to water to prevent tooth decay
16.Which government agency sets drinking water standards in the
United States?
o A) FDA
o B) EPA
o C) OSHA
o D) DOT
o ANSWER : B) EPA
17.What does MCL stand for?
