2/22/25, 1:21 AM Class A Water Operator Exam Questions & Answers Latest Update Flashcards | Quizlet
Class A Water Operator Exam Questions &
Answers Latest Update
Save
Terms in this set (161)
How many Training Hours 16 Hours Training and No Experience
and experience for a
class D Water Operator
How many Training Hours 36 Hours Training and 1 year Experience
and experience for a
class C Water Operator
How many Training Hours 100 Hours Training and 3 years Experience (must
and experience for a include 1 year of hands on experience)
class B Water Operator
How many Training Hours 200 Hours Training and 5 years Experience (must
and experience for a include 2 years of hands on experience)
class A Water Operator
How many Training Hours 32 Hours and no experience
and experience for a
Class C Lab Operator
How many Training Hours 32 hours of C and 32 hours of B and 6 months
and experience for a experience. ***associate in science can substitute
Class B Lab Operator 32hrs of C level training
How many Training Hours 32 hours of B and 1 year experience. ***Must include
and experience for a a Bachelor in science
Class A Lab Operator
https://quizlet.com/1009069862/class-a-water-operator-exam-questions-answers-latest-update-flash-cards/?new 1/19
,2/22/25, 1:21 AM Class A Water Operator Exam Questions & Answers Latest Update Flashcards | Quizlet
How many Training Hours 36hours and 1 year experience
and experience for a
Class C Distribution
Operator
How many Training Hours 8 hours and no training.
and experience for a
Distribution Technician
A public water supply that has at least 15 service
Community Water System connections or serves 25 or more persons on a
regular basis
Contaminants identifies by the EPA as harmful to
Primary Contaminants
umal health
Maximum Containment The level in which contaminants must not exceed or
Level (MCL) public notification is required.
A microsocpic parasite that can be found in water. It
produces cysts that are very resistant to harsh
environmental conditions. It is responsible for
Cryptosporidium intestinal illness called cryptosporidiosis. Symptoms
include diarrhea, cramps, gas, bodily discomfort,
fatigue, and weight loss. Occurs one week after
exposure and can last for 1-4 weeks
A water system assesses the level of disinfection
currently provided and then determines the impact
Disinfection Profiling
a proposed change in disinfection practice would
have.
A bacterium that is commonly used as an indicator
of human health risk from harmful micro organisms
that can be present in water. Symptoms include
E. coli
sever cramps and diarrhea. Blood is often seen in
the stool. Symptoms begin 1-9 days after exposure
and last a week or less.
https://quizlet.com/1009069862/class-a-water-operator-exam-questions-answers-latest-update-flash-cards/?new 2/19
, 2/22/25, 1:21 AM Class A Water Operator Exam Questions & Answers Latest Update Flashcards | Quizlet
A microscopic parasite that can be found in water. It
produces cysts that are resistant to harsh
environmental conditions. Giardia causes intestinal
Giardia illness called giardiasis. Symptoms simular to
cryptosporidiosis. Vomition, chills, headache and
fever may also occur. Symptoms begin one week
after exposure and can last up to a month.
A characteristic of water caused mainly by the salts
of calcium (Ca++) and magnesium (Mg++).
Undesirable due to formation of soap curds,
Hard Water
increase use of soap, and scale deposits in boilers
and water heaters. Defines as having hardness of
100mg/L or greater
Maximum Residual The highest level of disinfectant allowed in drinking
Disinfectant Level water. Standards set by the US EPA
(MDRLs)
Microbial Pathogens Micro-organisms that cause disease
An Act passed by the US Congress in 1974. It
Safe Drinking Water Act establishes a cooperative program among local,
(SDWA) state, and federal agencies to ensure safe drinking
water for customers.
Ch 1 - One gallon of 8.34 pounds
water weighs
Ch 1- The average 100-130 gallons
domestic water usage
per person per day is
usually somewhere in the
range of
Ch 1 -Probably the most Lab Results
important source of
information to use when
implementing changes in
process control at a
water plant is
https://quizlet.com/1009069862/class-a-water-operator-exam-questions-answers-latest-update-flash-cards/?new 3/19
Class A Water Operator Exam Questions &
Answers Latest Update
Save
Terms in this set (161)
How many Training Hours 16 Hours Training and No Experience
and experience for a
class D Water Operator
How many Training Hours 36 Hours Training and 1 year Experience
and experience for a
class C Water Operator
How many Training Hours 100 Hours Training and 3 years Experience (must
and experience for a include 1 year of hands on experience)
class B Water Operator
How many Training Hours 200 Hours Training and 5 years Experience (must
and experience for a include 2 years of hands on experience)
class A Water Operator
How many Training Hours 32 Hours and no experience
and experience for a
Class C Lab Operator
How many Training Hours 32 hours of C and 32 hours of B and 6 months
and experience for a experience. ***associate in science can substitute
Class B Lab Operator 32hrs of C level training
How many Training Hours 32 hours of B and 1 year experience. ***Must include
and experience for a a Bachelor in science
Class A Lab Operator
https://quizlet.com/1009069862/class-a-water-operator-exam-questions-answers-latest-update-flash-cards/?new 1/19
,2/22/25, 1:21 AM Class A Water Operator Exam Questions & Answers Latest Update Flashcards | Quizlet
How many Training Hours 36hours and 1 year experience
and experience for a
Class C Distribution
Operator
How many Training Hours 8 hours and no training.
and experience for a
Distribution Technician
A public water supply that has at least 15 service
Community Water System connections or serves 25 or more persons on a
regular basis
Contaminants identifies by the EPA as harmful to
Primary Contaminants
umal health
Maximum Containment The level in which contaminants must not exceed or
Level (MCL) public notification is required.
A microsocpic parasite that can be found in water. It
produces cysts that are very resistant to harsh
environmental conditions. It is responsible for
Cryptosporidium intestinal illness called cryptosporidiosis. Symptoms
include diarrhea, cramps, gas, bodily discomfort,
fatigue, and weight loss. Occurs one week after
exposure and can last for 1-4 weeks
A water system assesses the level of disinfection
currently provided and then determines the impact
Disinfection Profiling
a proposed change in disinfection practice would
have.
A bacterium that is commonly used as an indicator
of human health risk from harmful micro organisms
that can be present in water. Symptoms include
E. coli
sever cramps and diarrhea. Blood is often seen in
the stool. Symptoms begin 1-9 days after exposure
and last a week or less.
https://quizlet.com/1009069862/class-a-water-operator-exam-questions-answers-latest-update-flash-cards/?new 2/19
, 2/22/25, 1:21 AM Class A Water Operator Exam Questions & Answers Latest Update Flashcards | Quizlet
A microscopic parasite that can be found in water. It
produces cysts that are resistant to harsh
environmental conditions. Giardia causes intestinal
Giardia illness called giardiasis. Symptoms simular to
cryptosporidiosis. Vomition, chills, headache and
fever may also occur. Symptoms begin one week
after exposure and can last up to a month.
A characteristic of water caused mainly by the salts
of calcium (Ca++) and magnesium (Mg++).
Undesirable due to formation of soap curds,
Hard Water
increase use of soap, and scale deposits in boilers
and water heaters. Defines as having hardness of
100mg/L or greater
Maximum Residual The highest level of disinfectant allowed in drinking
Disinfectant Level water. Standards set by the US EPA
(MDRLs)
Microbial Pathogens Micro-organisms that cause disease
An Act passed by the US Congress in 1974. It
Safe Drinking Water Act establishes a cooperative program among local,
(SDWA) state, and federal agencies to ensure safe drinking
water for customers.
Ch 1 - One gallon of 8.34 pounds
water weighs
Ch 1- The average 100-130 gallons
domestic water usage
per person per day is
usually somewhere in the
range of
Ch 1 -Probably the most Lab Results
important source of
information to use when
implementing changes in
process control at a
water plant is
https://quizlet.com/1009069862/class-a-water-operator-exam-questions-answers-latest-update-flash-cards/?new 3/19
