WATER DISTRIBUTION TEST 2025 QUESTIONS
AND ANSWERS GRADED A+ (BRAND NEW)
What does a C value of 140 means for a pipe?
The pipe interior is very smooth.
Which primary contaminant causes Blue Baby Syndrome?
Nitrate.
What is a nutating disc?
Type of a water meter for a small-diameter domestic service.
What causes hardness in water?
Magnesium and calcium.
Which of the following is a confined aquifer with groundwater under positive
pressure?
Artesian.
,____________ is an imaginary surface to which groundwater rises inder
hydrostatic pressure in wells.
Piezometric surface.
If chlorine was added to water, but there is no chlorine residual, which statment is
true?
Chlorine demand has not been met.
What is true about chlorine gas?
Chlorine has is 2.5 times heavier then air.
When is a ladder required in a trench?
When the trench is 4 feet or deeper?
What is the definition of diurnal pattern?
Daily pattern of water demand.
, What is formed when free chlorine reacts with organic matter?
Trihalomethane
What could happen if a valve is closed too rapidly?
Water hammer.
AD
Which of the following best describe Tier 1 of the Public Notification Rule?
A violation that poses an immediate threat to human health. The public must be
notify within 24 hours.
What is the typical concentration (strength) of bulk sodium hypochlorite solution
for desinfecting a water supply
12.5%
What should you do if your drop a sample container and the lid?
Get a new container and lid.
AND ANSWERS GRADED A+ (BRAND NEW)
What does a C value of 140 means for a pipe?
The pipe interior is very smooth.
Which primary contaminant causes Blue Baby Syndrome?
Nitrate.
What is a nutating disc?
Type of a water meter for a small-diameter domestic service.
What causes hardness in water?
Magnesium and calcium.
Which of the following is a confined aquifer with groundwater under positive
pressure?
Artesian.
,____________ is an imaginary surface to which groundwater rises inder
hydrostatic pressure in wells.
Piezometric surface.
If chlorine was added to water, but there is no chlorine residual, which statment is
true?
Chlorine demand has not been met.
What is true about chlorine gas?
Chlorine has is 2.5 times heavier then air.
When is a ladder required in a trench?
When the trench is 4 feet or deeper?
What is the definition of diurnal pattern?
Daily pattern of water demand.
, What is formed when free chlorine reacts with organic matter?
Trihalomethane
What could happen if a valve is closed too rapidly?
Water hammer.
AD
Which of the following best describe Tier 1 of the Public Notification Rule?
A violation that poses an immediate threat to human health. The public must be
notify within 24 hours.
What is the typical concentration (strength) of bulk sodium hypochlorite solution
for desinfecting a water supply
12.5%
What should you do if your drop a sample container and the lid?
Get a new container and lid.
