2024 WATER TREATMENT
CERTIFICATION PRACTICE EXAM
WITH CORRECT ANSWERS
If a consumer complains about the drinking water characteristics, the
operator should record the complaint and - CORRECT-ANSWERSInvestigate
immediately.
What term is used when a water utility divides its total operating expenses
into the total revenue? - CORRECT-ANSWERSOperating ratio
Dynamic head is best described as the - CORRECT-ANSWERStotal energy
that a pump must develop for pumping to take place.
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? - CORRECT-
ANSWERSWater hammer
Which of the following should an operator investigate first when the well
pump and control problems occur? - CORRECT-ANSWERSElectricity
Most pumps must be primed before startup in order to - CORRECT-
ANSWERSstart the flow of water.
What is the purpose of a check valve? - CORRECT-ANSWERSAct as an
automatic shutoff valve when the pump stops
What is the primary purpose of a preventative maintenance program? -
CORRECT-ANSWERSAvoid future equipment problems
A mixture of air and gas is considered hazardous when the mixture exceeds
what percentage of the lower explosive limit (LEL)? - CORRECT-
ANSWERS10%
Which of the following duties should NOT be performed by a small system
operator? - CORRECT-ANSWERSWire pumps, compressors, and electrical
components of the water system
, What are the most important methods of ensuring operator safety? -
CORRECT-ANSWERSAlerting operators of unsafe acts and conducting
mandatory safety training
What safety procedure should an operator always follow when mixing a
solution of sodium hypochlorite (liquid bleach) and fresh water? - CORRECT-
ANSWERSWear goggles and gloves when handling hypochlorite
Which form of hypochlorite is the most dangerous to handle? - CORRECT-
ANSWERSCalcium
What are the two most important safety concerns when entering a confined
space? - CORRECT-ANSWERSOxygen deficiency and hazardous gases
What piece of equipment must an operator wear when entering a confined
space? - CORRECT-ANSWERSHarness
What type of fire extinguisher should be used for fires with live electricity
present? - CORRECT-ANSWERSClass C
Which document provides a profile of hazardous substances? - CORRECT-
ANSWERSMSDS
What safety measures must an operator follow prior to working on electrical
equipment? - CORRECT-ANSWERSLock out and tag out all electrical switches
What is the correct procedure for mixing acid and water? - CORRECT-
ANSWERSAcid is added very slowly to the water
What is the purpose of a pump guard? - CORRECT-ANSWERSProtects
operators from rotating parts
The most important responsibility of an operator is to provide - CORRECT-
ANSWERSsafe drinking water.
To ensure that the water supplied by a public water system meets federal
and state requirements, the water system operator must regularly collect
samples and - CORRECT-ANSWERSsend all analysis results to the State
periodically.
The major source of error when obtaining water quality information is
improper - CORRECT-ANSWERSsampling.
A composite sample should never be used when sampling for which
contaminant? - CORRECT-ANSWERSBacteria
CERTIFICATION PRACTICE EXAM
WITH CORRECT ANSWERS
If a consumer complains about the drinking water characteristics, the
operator should record the complaint and - CORRECT-ANSWERSInvestigate
immediately.
What term is used when a water utility divides its total operating expenses
into the total revenue? - CORRECT-ANSWERSOperating ratio
Dynamic head is best described as the - CORRECT-ANSWERStotal energy
that a pump must develop for pumping to take place.
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? - CORRECT-
ANSWERSWater hammer
Which of the following should an operator investigate first when the well
pump and control problems occur? - CORRECT-ANSWERSElectricity
Most pumps must be primed before startup in order to - CORRECT-
ANSWERSstart the flow of water.
What is the purpose of a check valve? - CORRECT-ANSWERSAct as an
automatic shutoff valve when the pump stops
What is the primary purpose of a preventative maintenance program? -
CORRECT-ANSWERSAvoid future equipment problems
A mixture of air and gas is considered hazardous when the mixture exceeds
what percentage of the lower explosive limit (LEL)? - CORRECT-
ANSWERS10%
Which of the following duties should NOT be performed by a small system
operator? - CORRECT-ANSWERSWire pumps, compressors, and electrical
components of the water system
, What are the most important methods of ensuring operator safety? -
CORRECT-ANSWERSAlerting operators of unsafe acts and conducting
mandatory safety training
What safety procedure should an operator always follow when mixing a
solution of sodium hypochlorite (liquid bleach) and fresh water? - CORRECT-
ANSWERSWear goggles and gloves when handling hypochlorite
Which form of hypochlorite is the most dangerous to handle? - CORRECT-
ANSWERSCalcium
What are the two most important safety concerns when entering a confined
space? - CORRECT-ANSWERSOxygen deficiency and hazardous gases
What piece of equipment must an operator wear when entering a confined
space? - CORRECT-ANSWERSHarness
What type of fire extinguisher should be used for fires with live electricity
present? - CORRECT-ANSWERSClass C
Which document provides a profile of hazardous substances? - CORRECT-
ANSWERSMSDS
What safety measures must an operator follow prior to working on electrical
equipment? - CORRECT-ANSWERSLock out and tag out all electrical switches
What is the correct procedure for mixing acid and water? - CORRECT-
ANSWERSAcid is added very slowly to the water
What is the purpose of a pump guard? - CORRECT-ANSWERSProtects
operators from rotating parts
The most important responsibility of an operator is to provide - CORRECT-
ANSWERSsafe drinking water.
To ensure that the water supplied by a public water system meets federal
and state requirements, the water system operator must regularly collect
samples and - CORRECT-ANSWERSsend all analysis results to the State
periodically.
The major source of error when obtaining water quality information is
improper - CORRECT-ANSWERSsampling.
A composite sample should never be used when sampling for which
contaminant? - CORRECT-ANSWERSBacteria
