Florida Drinking Water Operator "B"
Study Guide with Complete Solutions
A ______________ sample is a single sample for water collected at a particular time
and place which represents the composition of the water only at that time and place. -
ANSWER-Grab sample
A class "A" Conventional filtration plant treats how much water? - ANSWER-5 MGD and
above
A class "B" Conventional filtration plant treats how much water? - ANSWER-1.0 MGD
up to 5.0 MGD
A class "C" Conventional filtration plant treats how much water? - ANSWER-0.3 MGD
up to 1.0 MGD
A coupon that was inserted into a water main lost weight over time. This indicates that
the water is what? - ANSWER-Corrosive
A dosage of 3 parts chlorine to 1 part ammonia forms which compound? - ANSWER-
Monochloramine
A fire started in the MCC room at an electrical panel. Which fire extinguisher should
NOT be used to fight the fire? - ANSWER-Pressurized water
A water sample has been filtered for an analysis of color. Which color type will be
determined? - ANSWER-True color
According to chapter 62-602 FAC an operator could have their license revoked
permanetly for doing what? - ANSWER-Falsified or misrepresented reports, logs, or lab
sheets
Activated alumina is effective at removing which contaminent? - ANSWER-Arsenic
As filtration rates increase to over 5gpm/sqf the operator of a dual media filter notices
increasing finished water turbidity in the filter effluent and shorter filter runs due to the
shearing of the iron flocs. What can be done upstream of the filters to improve
performance? - ANSWER-Add a polymer coagulant aid to strenghten the floc
As the uniformity coefficient decreases, what effect does this have on the relative size of
the filter media? - ANSWER-Media particle size becomes more uniform
Brackish water is concidered to be between _____ and _____ Total Dissolved Solids
(TDS) - ANSWER-1,000 - 10,000 TDS
, Chlorine dioxide used in water treatment has concerns regarding health implications
because it ___________________ - ANSWER-Produces chlorite and chlorate
Chlorine is a strong _______________ and prolonged exposure to chlorine gas or high
concentrations of chlorine gas could be fatal. - ANSWER-Respiratory irritant
Classify this plant:
a farmer has a spring on his farm and provides drinking water to 16 of his neighbors for
free - ANSWER-Community water system
Classify this plant:
A hospital with its own well and water treatment system - ANSWER-Nontransient
Noncommunity
Classify this plant:
A real estate developer drills a well and provides the water to 17 homes in the
development - ANSWER-Community water system
Ct values are calculated using what 2 pieces of data? - ANSWER-Chlorine
concentration after contact time and the total detention time
Direct filtration can be used where the source water is low in what? - ANSWER-
Turbidity, algae, color, and coliforms
Frosting around the outlet connection of a chlorine gas cylinder indicates what? -
ANSWER-Reduced flow of chlorine gas
How many fusible plugs are found on a 1-ton chlorine cylinder? - ANSWER-6
How much chlorine is required to completely oxidize 1 mg/l of hydrogen sulfide to the
sulfate form? - ANSWER-8.32 mg/l
How much does liquid chlorine expand when its converted to a gas? - ANSWER-450x
How much water is needed for a bac T sample? - ANSWER-100 ml
If a victim of chlorine exposure has slight throat irritation, relief can be accomplished by
drinking what? - ANSWER-Milk
If there are more hydroxyl ions in a solution than hydrogen ions, the solution is
considered what? - ANSWER-Basic
Study Guide with Complete Solutions
A ______________ sample is a single sample for water collected at a particular time
and place which represents the composition of the water only at that time and place. -
ANSWER-Grab sample
A class "A" Conventional filtration plant treats how much water? - ANSWER-5 MGD and
above
A class "B" Conventional filtration plant treats how much water? - ANSWER-1.0 MGD
up to 5.0 MGD
A class "C" Conventional filtration plant treats how much water? - ANSWER-0.3 MGD
up to 1.0 MGD
A coupon that was inserted into a water main lost weight over time. This indicates that
the water is what? - ANSWER-Corrosive
A dosage of 3 parts chlorine to 1 part ammonia forms which compound? - ANSWER-
Monochloramine
A fire started in the MCC room at an electrical panel. Which fire extinguisher should
NOT be used to fight the fire? - ANSWER-Pressurized water
A water sample has been filtered for an analysis of color. Which color type will be
determined? - ANSWER-True color
According to chapter 62-602 FAC an operator could have their license revoked
permanetly for doing what? - ANSWER-Falsified or misrepresented reports, logs, or lab
sheets
Activated alumina is effective at removing which contaminent? - ANSWER-Arsenic
As filtration rates increase to over 5gpm/sqf the operator of a dual media filter notices
increasing finished water turbidity in the filter effluent and shorter filter runs due to the
shearing of the iron flocs. What can be done upstream of the filters to improve
performance? - ANSWER-Add a polymer coagulant aid to strenghten the floc
As the uniformity coefficient decreases, what effect does this have on the relative size of
the filter media? - ANSWER-Media particle size becomes more uniform
Brackish water is concidered to be between _____ and _____ Total Dissolved Solids
(TDS) - ANSWER-1,000 - 10,000 TDS
, Chlorine dioxide used in water treatment has concerns regarding health implications
because it ___________________ - ANSWER-Produces chlorite and chlorate
Chlorine is a strong _______________ and prolonged exposure to chlorine gas or high
concentrations of chlorine gas could be fatal. - ANSWER-Respiratory irritant
Classify this plant:
a farmer has a spring on his farm and provides drinking water to 16 of his neighbors for
free - ANSWER-Community water system
Classify this plant:
A hospital with its own well and water treatment system - ANSWER-Nontransient
Noncommunity
Classify this plant:
A real estate developer drills a well and provides the water to 17 homes in the
development - ANSWER-Community water system
Ct values are calculated using what 2 pieces of data? - ANSWER-Chlorine
concentration after contact time and the total detention time
Direct filtration can be used where the source water is low in what? - ANSWER-
Turbidity, algae, color, and coliforms
Frosting around the outlet connection of a chlorine gas cylinder indicates what? -
ANSWER-Reduced flow of chlorine gas
How many fusible plugs are found on a 1-ton chlorine cylinder? - ANSWER-6
How much chlorine is required to completely oxidize 1 mg/l of hydrogen sulfide to the
sulfate form? - ANSWER-8.32 mg/l
How much does liquid chlorine expand when its converted to a gas? - ANSWER-450x
How much water is needed for a bac T sample? - ANSWER-100 ml
If a victim of chlorine exposure has slight throat irritation, relief can be accomplished by
drinking what? - ANSWER-Milk
If there are more hydroxyl ions in a solution than hydrogen ions, the solution is
considered what? - ANSWER-Basic
