FDEP WATER TREATMENT C EXAM LATEST 2026 UPDATED
QUESTIONS AND VERIFIED 100% SOLUTIONS (2026/2027)
GRADE: A+|STATUS: GUARANTEED PASS
What are the components of a chlorine residual? - Answers -Combined chlorine forms plus free
chlorine
Where should the minimum chlorine residual be measured in the distribution system? -
Answers -the most remote location in the system
How are ORP probes used in the disinfection process? - Answers -ORP (Oxidation-reduction
potential) probes provide a direct measure of the disinfecting power of the disinfectant
Why are zinc and magnesium commonly used as sacrificial anodes in water tanks or for buried
pipes? - Answers -They will corrode preferentially to Aluminum and iron
Why should samples for corrosive tests be taken only after post-chlorination? - Answers -
Because disinfectant chemicals may react with corrosion-control chemicals to either increase or
decrease corrosivity
Where are monitoring samples for "the lead and Copper Rule" collected? - Answers -At the
consumer's tap
1|Page
,What is the secret to successful taste and odor control? - Answers -Prevent tastes and odors
from ever developing
Taste and odor removal can be divided into which categories? - Answers -removal and
destruction
Where is powdered activated carbon often applied? - Answers -At the flash mixer
Over which water quality indicator do operators have the greatest control? - Answers -Turbidity
Which chemical is one of the most dangerous of the common alkalies? - Answers -Caustic soda
(sodium hydroxide) (NaOH)
What should an operator do first when a treatment process upset results in the failure to meet
a specific drinking water quality standard? - Answers -Notify local health authorities
which piece of laboratory equipment is the most accurate way to measure a volume of liquid? -
Answers -Pipet
2|Page
, which piece of laboratory equipment is used to titrate a chemical reagent? - Answers -Buret
Which style of thermometer will change the most rapidly when removed from the liquid
sample? - Answers -Total immersion
what is the accepted method used to measure turbidity? - Answers -Nephelometric
The size of a water treatment plant as well as the number of specific types of processes it uses
depends on which of the following factors?
1. Cost
2. Demand
3. fire protection
4. impurities
5. water quality standards - Answers -1,2,3,4,5
which of the following tasks are typical duties for a water treatment operator?
1.collect representative water samples
2.conduct safety inspections
3.maintain plant records
4.make periodic operating checks of plant equipment
3|Page
QUESTIONS AND VERIFIED 100% SOLUTIONS (2026/2027)
GRADE: A+|STATUS: GUARANTEED PASS
What are the components of a chlorine residual? - Answers -Combined chlorine forms plus free
chlorine
Where should the minimum chlorine residual be measured in the distribution system? -
Answers -the most remote location in the system
How are ORP probes used in the disinfection process? - Answers -ORP (Oxidation-reduction
potential) probes provide a direct measure of the disinfecting power of the disinfectant
Why are zinc and magnesium commonly used as sacrificial anodes in water tanks or for buried
pipes? - Answers -They will corrode preferentially to Aluminum and iron
Why should samples for corrosive tests be taken only after post-chlorination? - Answers -
Because disinfectant chemicals may react with corrosion-control chemicals to either increase or
decrease corrosivity
Where are monitoring samples for "the lead and Copper Rule" collected? - Answers -At the
consumer's tap
1|Page
,What is the secret to successful taste and odor control? - Answers -Prevent tastes and odors
from ever developing
Taste and odor removal can be divided into which categories? - Answers -removal and
destruction
Where is powdered activated carbon often applied? - Answers -At the flash mixer
Over which water quality indicator do operators have the greatest control? - Answers -Turbidity
Which chemical is one of the most dangerous of the common alkalies? - Answers -Caustic soda
(sodium hydroxide) (NaOH)
What should an operator do first when a treatment process upset results in the failure to meet
a specific drinking water quality standard? - Answers -Notify local health authorities
which piece of laboratory equipment is the most accurate way to measure a volume of liquid? -
Answers -Pipet
2|Page
, which piece of laboratory equipment is used to titrate a chemical reagent? - Answers -Buret
Which style of thermometer will change the most rapidly when removed from the liquid
sample? - Answers -Total immersion
what is the accepted method used to measure turbidity? - Answers -Nephelometric
The size of a water treatment plant as well as the number of specific types of processes it uses
depends on which of the following factors?
1. Cost
2. Demand
3. fire protection
4. impurities
5. water quality standards - Answers -1,2,3,4,5
which of the following tasks are typical duties for a water treatment operator?
1.collect representative water samples
2.conduct safety inspections
3.maintain plant records
4.make periodic operating checks of plant equipment
3|Page
