Questions

Question 1

True/False
The water supplier’s Management & operation have the legal responsibility for delivering safe water to their customers.

Answer 1

True

Question 2

True/False
Critical areas of the distribution system should be patrolled routinely so that the water utility will have an early warning of any adverse conditions that might appear.

Answer 2

True

Question 3

True/False

Operators should use Force to remove any Vandal encounter on utility property.

Answer 3

False

Question 4

A lack of chlorine residual in a distribution system could indicate the potential presence of heavy contamination.

Answer 4

True

Question 5

True/False

Operators should have access to Emergency Equipment and rental equipment with the authority to act.

Answer 5

True

Question 6

True/False

Disinfection systems with lower pressures produce more leakage.

Answer 6

False

Question 7

True/False

Meters tend to overregister as they get older

Answer 7

False (under register)

Question 8

True/False
All pipe installations should be inspected and tested for leaks by the Water Utility agency after the installation is covered with backfill.

Answer 8

False

Question 9

True/False

Flushing is commonly practiced after receiving water quality complaints.

Answer 9

True

Question 10

True/False
When performing electrical thawing of frozen water services, remove any electrical grounds that are connected to the pipe in that building.

Answer 10

True

Question 11

True/False

When thawing frozen fire hydrants, make sure the hydrant is in the off position before starting the thawing process.

Answer 11

True

Question 12

True/False

Repairing in-line (installed) gate valves is an easy task.

Answer 12

False

Question 13

True/False

When a water meter is taken out of service in the field, allow the inside of the meter to dry out.

Answer 13

False (page 229)

Question 14

True/False
When looking for water main breaks under pavement, poke in areas where underground electrical or other types of cables may be buried.

Answer 14

False

Question 15

True/False

Repair of water mains Under Pressure presents little danger of contamination and disinfection is NOT required.

Answer 15

True

Question 16

True/False
A geographic information system (GIS) can generate work orders in the form of a map with the work to be performed outlined on the map.

Answer 16

True

Question 17

True/False

All complaints should be treated as legitimate and investigated as soon as possible.

Answer 17

True

Question 18

Best Answer
Why are test pipes specimens (coupons) placed in water Distribution Systems?
1. To measure the cavitation of water 
2. To measure the corrosiveness of water
3. To measure the flow of water 
4. To measure the velocity of water

Answer 18

2. To measure the corrosiveness of water

Question 19

Best Answer
What is the purpose of a sanitary survey?
1. To control the microbial water quality in the distribution system
2. To ensure protection of the water supply from all pollution sources.
3. To search for sanitary defects or hazards in the system.
4. To survey the sources of a water supply.

Answer 19

2. To ensure protection of the water supply from all pollution sources.

Question 20

Best Answer
What is should samples be obtained for the best and truest evaluation of water quality?
1. Directly from the consumers Taps.
2. Directly from the main at specially-designed sampling stations.
3. Directly from the source of the water supply.
4. Directly from the treatment plants clear well.

Answer 20

2. Directly from the main at specially-designed sampling stations.

Question 21

Best Answer
Why must a continuous positive pressure be maintained at all times in the water distribution System?
1 To have water available for fire protection
2 To minimize complaints from lack of water
3 To prevent contamination from backflow
4 To reduce unaccounted for water losses due to leaks

Answer 21

3 To prevent contamination from backflow

Question 22

Best Answer
What is the main function of a distribution system storage Reservoir?
1. To allow sediment to settle out of the water
2. To enhance the aesthetic appearance of a neighborhood
3. To provide for chlorine contact time for disinfection
4. To take care of daily demands as well as Peak demands.

Answer 22

4. To take care of daily demands as well as Peak demands

Question 23

Best Answer
How can a leak detection program be economically Justified?
1. If a reduction in flow of leaks can reduce cost savings greater than the cost of maintaining a leak detection field crew.
2. If rate payers are willing to pay increased cost.
3. If the benefits from satisfied consumers is greater than the cost.
4. If the cost of pipe replacement is less than O&M cost.

Answer 23

1. If a reduction in flow of leaks can reduce cost savings greater than the cost of maintaining a leak detection field crew.

Question 24

Best answer
What is the purpose of pipe Flushing?
1. To clean out distribution pipelines by removing any impurities or sediment that may be present in the pipe
2. To maintain minimum dry weather Flows In nearby Creeks.
3. To remove stale or stagnant water from the system.
4. To swap out the inside of pipes prior to disinfection.

Answer 24

1. To clean out distribution pipelines by removing any impurities or sediment that may be present in the pipe

Question 25

Best answer What is unidirectional Flushing? 1. Always flushing up here. 2. Ensuring the flushing crews are always working in the same direction. 3. Planning the flushing operation to avoid back pressure and backsiphonage 4. Starting at or near the source of Supply on working outword into the distribution system.

Answer 25

4. Starting at or near the source of Supply on working outword into the distribution system.

Question 26

Best Answer What is the primary purpose of distribution system shut off valves? 1. To adjust pressures to maintain minimum pressures 2. To control water hammer 3. To direct flow to high demand areas 4. To isolate small areas for emergency maintenance

Answer 26

4. To isolate small areas for emergency maintenance

Question 27

Best Answer What is underregistration by a water meter of serious concern to a water utility? 1. Because of a loss of Revenue. 2. Because of the unfairness to Consumers. 3. Because the meter could start leaking at any time. 4. Because the meter needs to be repacked.

Answer 27

1. Because of a loss of Revenue.

Question 28

Best Answer What could be the result of an adequate disinfection of distribution system Mains and reservoirs? 1. A need to increase the number of chlorine residual Test. 2. A reduction in consumer complaints of water testing like chlorine. 3. A reduction in the corrosiveness of the word. 4. A waterborne disease outbreak somewhere in the community.

Answer 28

4. A waterborne disease outbreak somewhere in the community.

Question 29

Best Answer Why must the storage conditions for calcium hypochlorite be controlled? 1. To prevent deterioration or reaction with combustible chemicals or materials. 2. To prevent Escape of chlorine odors. 3. To prevent formation of Trihalomethanes. 4. To prevent superchlorination of drinking water.

Answer 29

1. To prevent deterioration or reaction with combustible chemicals or materials.

Question 30

Best answer What is a geographic information system GIS a computer program that what? 1. Assists planners follow zoning patterns. 2. Combines mapping with detailed information about the physical characteristics within Geographic areas. 3. Record and analyzes trends in system flows. 4. Stores and sorts maintenance information

Answer 30

2. Combines mapping with detailed information about the physical characteristics within Geographic areas.

Question 31

Best answer What is a vulnerability assessment of a water distribution system? 1. A determination of the funding needed to recover from the disaster. 2. A determination of where the weaknesses are if the disaster being considered took place. 3. A determination which parts of a system need repair / replacement. 4. A determination of which staff can respond to the disaster.

Answer 31

2. A determination of where the weaknesses are if the disaster being considered took place.