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Drinking Water Treatment Operator Class 1/101 Q’s and A’s
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Drinking Water Treatment OperatorClass 1/101 Q’s and A’s
If a customer complains about the drinking water characteristics, the
operator should record the complaint and... - -Investigate immediately
-What term is used when a water utility divides its total operating expenses
into a total revenue? - -Operating ratio
-How often should data, such as flow rate, amount of water treated, dosage
of chemical, and reservoir levels be recorded? - -Daily
-Under the requirements of the Safe Water Drinking Act, it is the duty of the
water purveyor to deliver potable water of proper quantity only as far as
the... - -Consumer's tap inside the home
-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.... - -15 service connections or over 25 persons for
over 60 days a year
-What agent is responsible for reporting lab results to the regulatory
agency? - -Water system owner
-What causes water to moves through pores in the soil & rocks? - -Gravity
-Disease producing bacteria are called ? - -Pathogens
-What are the two main causes of hardness in water? - -Calcium &
Magnesium
-What device measures the flow rate of gases? - -Rotameter
-Excessive internal pressure, which may be several times the normal
operating pressure and can seriously damage hydropneumatic tanks, valves,
and piping network? - -Water Hammer
-Most pumps must be primed before startup in order to... - -Start the flow of
water
-What is the purpose of a check valve? - -Act as an automatic shutoff valve
when the pump stops
-Which form of hypochlorite is the most dangerous to handle? - -Calcium
, -What type of fire extinguisher should be used for fires with live electricity
present? - -Class C
-Documents that provide a profile of hazardous material? - -MSDS
-What is the purpose of a pump guard? - -Protects operators from rotating
parts
-The major source of error when obtaining water quality info is improper... -
-Sampling
-A composite sample should never be used when sampling for... - -Bacteria
-How many coliform samples are required per month for a water system
serving a population between 25 & 100? - -1
-Water laboratory test calculations and results use which system? - -Metric
-Factors of what number are used in the metric system? - -10
-What is the most common method used in labs for total coliform & E. coli? -
-Colilert
-Test method that best determines chemical feed/dosage rates? - -Jar test
-Chlorine demand is satisfied at the point when... - -The reaction of chlorine
with organic & inorganic materials stops
-Chlorine will destroy bacteria most rapidly at what pH? - -7.5
-What is the process of adding chlorine to water until the chlorine demand
had been satisfied? - -Breakpoint Chlorination
-Which of the following pH ranges would deposit a thin film of calcium
carbonate on the inside surface of a pipe? - -8.0-9.0
-Most important reason for maintaining continuous pressure throughout the
distribution system is? - -Prevent contamination from backflow
-A weir should be used to measure water in which locations? - -Open
channels
-Rotten egg small & taste problems? - -Hydrogen sulfide
-Coliforms are... - -Indicator Organisms
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