Water Distribution System 7th Edition
Exam Questions With Complete
Solutions
Over pumping and depleting the aquifer - CORRECT ANSWER-Intrusion of seawater
into groundwater basins result from?
What is stratification in lakes and reservoirs? - CORRECT ANSWER-Formation of
separate layers of temperature, plant life, or animal life
What causes the elevation and slope of water tables and artesian pressure levels to
change? - CORRECT ANSWER-Seasonal variations in the supply of water
How extensive should the treatment be for reclaimed water? - CORRECT ANSWER-
Depends on potential exposure to the public
The water distribution system must have sufficient capacity to meet 3 qualifying factors
throughout the system. - CORRECT ANSWER-Max water demand plus firefighting
requirements and maintain adequate pressure
What is one difference between primary and secondary drinking water regulations? -
CORRECT ANSWER-Primary regulations are mandatory limits while secondary
regulations are guidelines
Palatable water - CORRECT ANSWER-Water at a desirable temperature that is free
from objectionable tastes, odors, colors, and turbidity
, Contamination - CORRECT ANSWER-One factor that may cause water quality
degradation
Groundwater takes longer to recover after contamination due to? - CORRECT
ANSWER-Slow water movement
Two causes of backflow though a cross-connection? - CORRECT ANSWER-Back
pressure and backsiphonage
Chloramines - CORRECT ANSWER-Form of chlorine most effective against biofilms
Careless operating procedures - CORRECT ANSWER-Improperly constructed or poorly
located blow offs or air release and vacuum relief valves
Integrity of the coating - CORRECT ANSWER-Influences the potential for corrosion in
metal or asbestos pipe that is lined with asphalt or coal tar
At least twice a month - CORRECT ANSWER-Reservoirs should be inspected
Why are uncovered reservoirs often prohibited? - CORRECT ANSWER-Subject to
contamination from many sources
What is an important aspect of a tank inspection and maintenance program? -
CORRECT ANSWER-Ensuring adequate turnover of water in the tank
Why should an O&M program include exercising the valve? - CORRECT ANSWER-To
ensure proper setting and operation
Exam Questions With Complete
Solutions
Over pumping and depleting the aquifer - CORRECT ANSWER-Intrusion of seawater
into groundwater basins result from?
What is stratification in lakes and reservoirs? - CORRECT ANSWER-Formation of
separate layers of temperature, plant life, or animal life
What causes the elevation and slope of water tables and artesian pressure levels to
change? - CORRECT ANSWER-Seasonal variations in the supply of water
How extensive should the treatment be for reclaimed water? - CORRECT ANSWER-
Depends on potential exposure to the public
The water distribution system must have sufficient capacity to meet 3 qualifying factors
throughout the system. - CORRECT ANSWER-Max water demand plus firefighting
requirements and maintain adequate pressure
What is one difference between primary and secondary drinking water regulations? -
CORRECT ANSWER-Primary regulations are mandatory limits while secondary
regulations are guidelines
Palatable water - CORRECT ANSWER-Water at a desirable temperature that is free
from objectionable tastes, odors, colors, and turbidity
, Contamination - CORRECT ANSWER-One factor that may cause water quality
degradation
Groundwater takes longer to recover after contamination due to? - CORRECT
ANSWER-Slow water movement
Two causes of backflow though a cross-connection? - CORRECT ANSWER-Back
pressure and backsiphonage
Chloramines - CORRECT ANSWER-Form of chlorine most effective against biofilms
Careless operating procedures - CORRECT ANSWER-Improperly constructed or poorly
located blow offs or air release and vacuum relief valves
Integrity of the coating - CORRECT ANSWER-Influences the potential for corrosion in
metal or asbestos pipe that is lined with asphalt or coal tar
At least twice a month - CORRECT ANSWER-Reservoirs should be inspected
Why are uncovered reservoirs often prohibited? - CORRECT ANSWER-Subject to
contamination from many sources
What is an important aspect of a tank inspection and maintenance program? -
CORRECT ANSWER-Ensuring adequate turnover of water in the tank
Why should an O&M program include exercising the valve? - CORRECT ANSWER-To
ensure proper setting and operation
