Water Treatment Operator Certification Practice Exam |
Latest Update 2026 | Graded A+
Investigate immediately. - correct answerIf a consumer complains about the drinking
water characteristics, the operator should record the complaint and
Operating ratio - correct answerWhat term is used when a water utility divides its total
operating expenses into the total revenue?
Daily - correct answerHow 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
answerWhich of the following is the most important reason to keep daily records of
operational data?
Consumer's tap inside the home. - correct answerUnder 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
answerAccording 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 answerWhat 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 answerAccording 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 answerWhat federal law is designed to protect the safety and health of
operators?
Safe Drinking Water Act - correct answerWhat federal law regulates public water
supplies?
Gravity - correct answerWhat causes water to move through pores in soil and rocks?
Coliform bacteria - correct answerWhat is commonly used indicator of possible health
problems found in plants, soil, water and the intestines of humans and warm-blooded
animals?
, Pathogenic - correct answerWhat are disease producing bacteria called?
Calcium and Magnesium - correct answerWhat are the two main causes of hardness in
water?
Deep well in gravel - correct answerWhich source of water has the greatest natural
protection from bacterial contamination?
Rotameter - correct answerWhat device measures the flow rate of gases?
According to the manufacturer recommendations - correct answerHow often should
preventative maintenance for equipment be performed?
total energy that a pump must develop for pumping to take place. - correct
answerDynamic head is best described as the
Water hammer - correct answerWhich 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 answerWhich of the following should an operator investigate first
when the well pump and control problems occur?
start the flow of water. - correct answerMost pumps must be primed before startup in
order to
Act as an automatic shutoff valve when the pump stops - correct answerWhat is the
purpose of a check valve?
Avoid future equipment problems - correct answerWhat is the primary purpose of a
preventative maintenance program?
10% - correct answerA 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
answerWhich of the following duties should NOT be performed by a small system
operator?
Alerting operators of unsafe acts and conducting mandatory safety training - correct
answerWhat are the most important methods of ensuring operator safety?
Wear goggles and gloves when handling hypochlorite - correct answerWhat safety
procedure should an operator always follow when mixing a solution of sodium
hypochlorite (liquid bleach) and fresh water?
Latest Update 2026 | Graded A+
Investigate immediately. - correct answerIf a consumer complains about the drinking
water characteristics, the operator should record the complaint and
Operating ratio - correct answerWhat term is used when a water utility divides its total
operating expenses into the total revenue?
Daily - correct answerHow 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
answerWhich of the following is the most important reason to keep daily records of
operational data?
Consumer's tap inside the home. - correct answerUnder 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
answerAccording 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 answerWhat 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 answerAccording 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 answerWhat federal law is designed to protect the safety and health of
operators?
Safe Drinking Water Act - correct answerWhat federal law regulates public water
supplies?
Gravity - correct answerWhat causes water to move through pores in soil and rocks?
Coliform bacteria - correct answerWhat is commonly used indicator of possible health
problems found in plants, soil, water and the intestines of humans and warm-blooded
animals?
, Pathogenic - correct answerWhat are disease producing bacteria called?
Calcium and Magnesium - correct answerWhat are the two main causes of hardness in
water?
Deep well in gravel - correct answerWhich source of water has the greatest natural
protection from bacterial contamination?
Rotameter - correct answerWhat device measures the flow rate of gases?
According to the manufacturer recommendations - correct answerHow often should
preventative maintenance for equipment be performed?
total energy that a pump must develop for pumping to take place. - correct
answerDynamic head is best described as the
Water hammer - correct answerWhich 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 answerWhich of the following should an operator investigate first
when the well pump and control problems occur?
start the flow of water. - correct answerMost pumps must be primed before startup in
order to
Act as an automatic shutoff valve when the pump stops - correct answerWhat is the
purpose of a check valve?
Avoid future equipment problems - correct answerWhat is the primary purpose of a
preventative maintenance program?
10% - correct answerA 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
answerWhich of the following duties should NOT be performed by a small system
operator?
Alerting operators of unsafe acts and conducting mandatory safety training - correct
answerWhat are the most important methods of ensuring operator safety?
Wear goggles and gloves when handling hypochlorite - correct answerWhat safety
procedure should an operator always follow when mixing a solution of sodium
hypochlorite (liquid bleach) and fresh water?
