CLASS A WATER OPERATOR EXAM
QUESTIONS AND ANSWERS
How many Training Hours and experience for a class D Water Operator -ANS16 Hours
Training and No Experience
How many Training Hours and experience for a class C Water Operator -ANS36 Hours
Training and 1 year Experience
How many Training Hours and experience for a class B Water Operator -ANS100 Hours
Training and 3 years Experience (must include 1 year of hands on experience)
How many Training Hours and experience for a class A Water Operator -ANS200 Hours
Training and 5 years Experience (must include 2 years of hands on experience)
How many Training Hours and experience for a Class C Lab Operator -ANS32 Hours
and no experience
How many Training Hours and experience for a Class B Lab Operator -ANS32 hours of
C and 32 hours of B and 6 months experience. ***associate in science can substitute
32hrs of C level training
How many Training Hours and experience for a Class A Lab Operator -ANS32 hours of
B and 1 year experience. ***Must include a Bachelor in science
How many Training Hours and experience for a Class C Distribution Operator -
ANS36hours and 1 year experience
How many Training Hours and experience for a Distribution Technician -ANS8 hours
and no training.
Community Water System -ANSA public water supply that has at least 15 service
connections or serves 25 or more persons on a regular basis
Primary Contaminants -ANSContaminants identifies by the EPA as harmful to umal
health
Maximum Containment Level (MCL) -ANSThe level in which contaminants must not
exceed or public notification is required.
, Cryptosporidium -ANSA microsocpic parasite that can be found in water. It produces
cysts that are very resistant to harsh environmental conditions. It is responsible for
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
Disinfection Profiling -ANSA water system assesses the level of disinfection currently
provided and then determines the impact a proposed change in disinfection practice
would have.
E. coli -ANSA bacterium that is commonly used as an indicator of human health risk
from harmful micro organisms that can be present in water. Symptoms include sever
cramps and diarrhea. Blood is often seen in the stool. Symptoms begin 1-9 days after
exposure and last a week or less.
Giardia -ANSA microscopic parasite that can be found in water. It produces cysts that
are resistant to harsh environmental conditions. Giardia causes intestinal 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.
Hard Water -ANSA characteristic of water caused mainly by the salts of calcium (Ca++)
and magnesium (Mg++). Undesirable due to formation of soap curds, increase use of
soap, and scale deposits in boilers and water heaters. Defines as having hardness of
100mg/L or greater
Maximum Residual Disinfectant Level (MDRLs) -ANSThe highest level of disinfectant
allowed in drinking water. Standards set by the US EPA
Microbial Pathogens -ANSMicro-organisms that cause disease
Safe Drinking Water Act (SDWA) -ANSAn Act passed by the US Congress in 1974. It
establishes a cooperative program among local, state, and federal agencies to ensure
safe drinking water for customers.
Ch 1 - One gallon of water weighs -ANS8.34 pounds
Ch 1- The average domestic water usage per person per day is usually somewhere in
the range of -ANS100-130 gallons
Ch 1 -Probably the most important source of information to use when implementing
changes in process control at a water plant is -ANSLab Results
Ch 1 - The most important duty of a water plant operator is to -ANSHelp to protect the
health and well-being of the community
Apparent color -ANSThe color visible in water
QUESTIONS AND ANSWERS
How many Training Hours and experience for a class D Water Operator -ANS16 Hours
Training and No Experience
How many Training Hours and experience for a class C Water Operator -ANS36 Hours
Training and 1 year Experience
How many Training Hours and experience for a class B Water Operator -ANS100 Hours
Training and 3 years Experience (must include 1 year of hands on experience)
How many Training Hours and experience for a class A Water Operator -ANS200 Hours
Training and 5 years Experience (must include 2 years of hands on experience)
How many Training Hours and experience for a Class C Lab Operator -ANS32 Hours
and no experience
How many Training Hours and experience for a Class B Lab Operator -ANS32 hours of
C and 32 hours of B and 6 months experience. ***associate in science can substitute
32hrs of C level training
How many Training Hours and experience for a Class A Lab Operator -ANS32 hours of
B and 1 year experience. ***Must include a Bachelor in science
How many Training Hours and experience for a Class C Distribution Operator -
ANS36hours and 1 year experience
How many Training Hours and experience for a Distribution Technician -ANS8 hours
and no training.
Community Water System -ANSA public water supply that has at least 15 service
connections or serves 25 or more persons on a regular basis
Primary Contaminants -ANSContaminants identifies by the EPA as harmful to umal
health
Maximum Containment Level (MCL) -ANSThe level in which contaminants must not
exceed or public notification is required.
, Cryptosporidium -ANSA microsocpic parasite that can be found in water. It produces
cysts that are very resistant to harsh environmental conditions. It is responsible for
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
Disinfection Profiling -ANSA water system assesses the level of disinfection currently
provided and then determines the impact a proposed change in disinfection practice
would have.
E. coli -ANSA bacterium that is commonly used as an indicator of human health risk
from harmful micro organisms that can be present in water. Symptoms include sever
cramps and diarrhea. Blood is often seen in the stool. Symptoms begin 1-9 days after
exposure and last a week or less.
Giardia -ANSA microscopic parasite that can be found in water. It produces cysts that
are resistant to harsh environmental conditions. Giardia causes intestinal 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.
Hard Water -ANSA characteristic of water caused mainly by the salts of calcium (Ca++)
and magnesium (Mg++). Undesirable due to formation of soap curds, increase use of
soap, and scale deposits in boilers and water heaters. Defines as having hardness of
100mg/L or greater
Maximum Residual Disinfectant Level (MDRLs) -ANSThe highest level of disinfectant
allowed in drinking water. Standards set by the US EPA
Microbial Pathogens -ANSMicro-organisms that cause disease
Safe Drinking Water Act (SDWA) -ANSAn Act passed by the US Congress in 1974. It
establishes a cooperative program among local, state, and federal agencies to ensure
safe drinking water for customers.
Ch 1 - One gallon of water weighs -ANS8.34 pounds
Ch 1- The average domestic water usage per person per day is usually somewhere in
the range of -ANS100-130 gallons
Ch 1 -Probably the most important source of information to use when implementing
changes in process control at a water plant is -ANSLab Results
Ch 1 - The most important duty of a water plant operator is to -ANSHelp to protect the
health and well-being of the community
Apparent color -ANSThe color visible in water
