Introduction To Water Distribution
Final Test With All Answers Correct
And Verified 2026
Under what conditions may water mains be located adjacent to sewer
lines?
1. When the same utility agency is responsible for both systems
2. When both lines can be placed in the same trench
3. When physical conditions or soil conditions prevent minimum separation
distances from being met
4. When the groundwater table is low and the soil is dry - Ans--3. When
physical conditions or soil conditions prevent minimum separation
distances from being met
How can corrosion be prevented on the insides of cement or metal pipes?
1. Ensure proper construction techniques
2. Line with asphalt or coal tar coatings
3. Properly disinfect the water mains after installation
4. Minimize the length of pipe underground - Ans--2. Line with asphalt or
coal tar coatings
What influences the knowledge and skills required to work as a water
distribution system operator in a given system.
1. The certification board rating point system
2. the size and type of water distribution system
3. the number of operators on staff
4. the requirements imposed by the regulatory agency - Ans--2. the size
and type of water distribution system
What are organics?
, 1. Chemical substances that are based on the element carbon
2. Chemical substances that are based on nutrients
3. Chemical substances that are based on vegetable origins
4. Chemical substances that are based on water - Ans--1. Chemical
substances that are based on the element carbon
Why are chloramines more effective against biofilms than chlorine?
1. More toxic
2. More persistent
3. Stronger bioaccumulant
4. Stronger disinfectant - Ans--2. More persistent
Why have drinking water quality standards been prepared and used?
1. to determine the capacity of water storage facilities
2. to ensure that pumps deliver water at all times
3. to provide the needed quality control and ensure the acceptability of the
product
4. to require laboratories to develop detailed procedures - Ans--3. to
provide the needed quality control and ensure the acceptability of the
product
Why is water quality monitoring of distribution systems important?
1. to measure actual water quality in reservoirs
2. to identify when and where water quality changes occur in the system
3. to collect samples for laboratory analysis
4. to identify the location of actual sampling stations - Ans--2. to identify
when and where water quality changes occur in the system
When water lines are being repaired, how can possible contamination of
the water line be prevented?
1. keep pedestrians and children away from the hole
2. keep the hole dewatered
3. keep the trench properly shored
Final Test With All Answers Correct
And Verified 2026
Under what conditions may water mains be located adjacent to sewer
lines?
1. When the same utility agency is responsible for both systems
2. When both lines can be placed in the same trench
3. When physical conditions or soil conditions prevent minimum separation
distances from being met
4. When the groundwater table is low and the soil is dry - Ans--3. When
physical conditions or soil conditions prevent minimum separation
distances from being met
How can corrosion be prevented on the insides of cement or metal pipes?
1. Ensure proper construction techniques
2. Line with asphalt or coal tar coatings
3. Properly disinfect the water mains after installation
4. Minimize the length of pipe underground - Ans--2. Line with asphalt or
coal tar coatings
What influences the knowledge and skills required to work as a water
distribution system operator in a given system.
1. The certification board rating point system
2. the size and type of water distribution system
3. the number of operators on staff
4. the requirements imposed by the regulatory agency - Ans--2. the size
and type of water distribution system
What are organics?
, 1. Chemical substances that are based on the element carbon
2. Chemical substances that are based on nutrients
3. Chemical substances that are based on vegetable origins
4. Chemical substances that are based on water - Ans--1. Chemical
substances that are based on the element carbon
Why are chloramines more effective against biofilms than chlorine?
1. More toxic
2. More persistent
3. Stronger bioaccumulant
4. Stronger disinfectant - Ans--2. More persistent
Why have drinking water quality standards been prepared and used?
1. to determine the capacity of water storage facilities
2. to ensure that pumps deliver water at all times
3. to provide the needed quality control and ensure the acceptability of the
product
4. to require laboratories to develop detailed procedures - Ans--3. to
provide the needed quality control and ensure the acceptability of the
product
Why is water quality monitoring of distribution systems important?
1. to measure actual water quality in reservoirs
2. to identify when and where water quality changes occur in the system
3. to collect samples for laboratory analysis
4. to identify the location of actual sampling stations - Ans--2. to identify
when and where water quality changes occur in the system
When water lines are being repaired, how can possible contamination of
the water line be prevented?
1. keep pedestrians and children away from the hole
2. keep the hole dewatered
3. keep the trench properly shored
