Practice Certification Exam for Water Treatment| 75
questions| with complete solution
Investigate immediately. Correct Answer: If a consumer complains about the drinking water
characteristics, the operator should record the complaint and
Operating ratio Correct Answer: What term is used when a water utility divides its total
operating expenses into the total revenue?
Daily Correct Answer: How often should operating data, such as flow rate, amount of water
treated, dosage of chemical, and reservoir levels be recorded?
Document that safe drinking water has been delivered to customers Correct Answer: Which of
the following is the most important reason to keep daily records of operational data?
Consumer's tap inside the home. Correct Answer: Under the requirements of the Safe Drinking
Water Act, it is the duty of the water purveyor to deliver potable water of proper quantity only as
far as the
15 service connections or over 25 persons for over 60 days a year. Correct Answer: According
to the Safe Drinking Water Act, the basic definition of a public water supply system is any water
system that supplies water for human consumption that serves
Water system owner Correct Answer: What agent is responsible for for reporting lab results to
the regulatory agency?
3 months of the violation in a daily newspaper in the area served by the system. Correct Answer:
According to the USEPA drinking water regulations, the owner or operator of a public water
system which fails to comply with applicable monitoring requirements must give notice to the
public within
OSHA Correct Answer: What federal law is designed to protect the safety and health of
operators?
Safe Drinking Water Act Correct Answer: What federal law regulates public water supplies?
Gravity Correct Answer: What causes water to move through pores in soil and rocks?
Coliform bacteria Correct Answer: What is commonly used indicator of possible health
problems found in plants, soil, water and the intestines of humans and warm-blooded animals?
Pathogenic Correct Answer: What are disease producing bacteria called?
Calcium and Magnesium Correct Answer: What are the two main causes of hardness in water?
, Deep well in gravel Correct Answer: Which source of water has the greatest natural protection
from bacterial contamination?
Rotameter Correct Answer: What device measures the flow rate of gases?
According to the manufacturer recommendations Correct Answer: How often should
preventative maintenance for equipment be performed?
total energy that a pump must develop for pumping to take place. Correct Answer: Dynamic
head is best described as the
Water hammer Correct Answer: Which of the following terms refers to the excessive internal
pressure, which may be several times the normal operating pressure and can seriously damage
hydropneumatic tanks, valves, and the piping network?
Electricity Correct Answer: Which of the following should an operator investigate first when the
well pump and control problems occur?
start the flow of water. Correct Answer: Most pumps must be primed before startup in order to
Act as an automatic shutoff valve when the pump stops Correct Answer: What is the purpose of
a check valve?
Avoid future equipment problems Correct Answer: What is the primary purpose of a
preventative maintenance program?
10% Correct Answer: A mixture of air and gas is considered hazardous when the mixture
exceeds what percentage of the lower explosive limit (LEL)?
Wire pumps, compressors, and electrical components of the water system Correct Answer:
Which of the following duties should NOT be performed by a small system operator?
Alerting operators of unsafe acts and conducting mandatory safety training Correct Answer:
What are the most important methods of ensuring operator safety?
Wear goggles and gloves when handling hypochlorite Correct Answer: What safety procedure
should an operator always follow when mixing a solution of sodium hypochlorite (liquid bleach)
and fresh water?
Calcium Correct Answer: Which form of hypochlorite is the most dangerous to handle?
Oxygen deficiency and hazardous gases Correct Answer: What are the two most important
safety concerns when entering a confined space?
Harness Correct Answer: What piece of equipment must an operator wear when entering a
confined space?
questions| with complete solution
Investigate immediately. Correct Answer: If a consumer complains about the drinking water
characteristics, the operator should record the complaint and
Operating ratio Correct Answer: What term is used when a water utility divides its total
operating expenses into the total revenue?
Daily Correct Answer: How often should operating data, such as flow rate, amount of water
treated, dosage of chemical, and reservoir levels be recorded?
Document that safe drinking water has been delivered to customers Correct Answer: Which of
the following is the most important reason to keep daily records of operational data?
Consumer's tap inside the home. Correct Answer: Under the requirements of the Safe Drinking
Water Act, it is the duty of the water purveyor to deliver potable water of proper quantity only as
far as the
15 service connections or over 25 persons for over 60 days a year. Correct Answer: According
to the Safe Drinking Water Act, the basic definition of a public water supply system is any water
system that supplies water for human consumption that serves
Water system owner Correct Answer: What agent is responsible for for reporting lab results to
the regulatory agency?
3 months of the violation in a daily newspaper in the area served by the system. Correct Answer:
According to the USEPA drinking water regulations, the owner or operator of a public water
system which fails to comply with applicable monitoring requirements must give notice to the
public within
OSHA Correct Answer: What federal law is designed to protect the safety and health of
operators?
Safe Drinking Water Act Correct Answer: What federal law regulates public water supplies?
Gravity Correct Answer: What causes water to move through pores in soil and rocks?
Coliform bacteria Correct Answer: What is commonly used indicator of possible health
problems found in plants, soil, water and the intestines of humans and warm-blooded animals?
Pathogenic Correct Answer: What are disease producing bacteria called?
Calcium and Magnesium Correct Answer: What are the two main causes of hardness in water?
, Deep well in gravel Correct Answer: Which source of water has the greatest natural protection
from bacterial contamination?
Rotameter Correct Answer: What device measures the flow rate of gases?
According to the manufacturer recommendations Correct Answer: How often should
preventative maintenance for equipment be performed?
total energy that a pump must develop for pumping to take place. Correct Answer: Dynamic
head is best described as the
Water hammer Correct Answer: Which of the following terms refers to the excessive internal
pressure, which may be several times the normal operating pressure and can seriously damage
hydropneumatic tanks, valves, and the piping network?
Electricity Correct Answer: Which of the following should an operator investigate first when the
well pump and control problems occur?
start the flow of water. Correct Answer: Most pumps must be primed before startup in order to
Act as an automatic shutoff valve when the pump stops Correct Answer: What is the purpose of
a check valve?
Avoid future equipment problems Correct Answer: What is the primary purpose of a
preventative maintenance program?
10% Correct Answer: A mixture of air and gas is considered hazardous when the mixture
exceeds what percentage of the lower explosive limit (LEL)?
Wire pumps, compressors, and electrical components of the water system Correct Answer:
Which of the following duties should NOT be performed by a small system operator?
Alerting operators of unsafe acts and conducting mandatory safety training Correct Answer:
What are the most important methods of ensuring operator safety?
Wear goggles and gloves when handling hypochlorite Correct Answer: What safety procedure
should an operator always follow when mixing a solution of sodium hypochlorite (liquid bleach)
and fresh water?
Calcium Correct Answer: Which form of hypochlorite is the most dangerous to handle?
Oxygen deficiency and hazardous gases Correct Answer: What are the two most important
safety concerns when entering a confined space?
Harness Correct Answer: What piece of equipment must an operator wear when entering a
confined space?
